In the above reading, it talks about one population wandering away from the other in search of food as the beginning of the polar bear sub-species. Which of the following best describes what occurred to cause this split of the bear population?
A. The brown bears were killed by disease 125,000 years ago leaving only a population of polar bears.
B. The massive glaciers isolated the populations causing geographic isolation
C. They had a variety of fur color alleles, so all the white furred bears moved north
D. All of the Above
Question 2.
Which of the following is an adaptation that allows a polar bear to survive in this biome?
A. Thick fur to help them stay warm
B. They began hunting seal carcasses and then live seals at the waters edge to gain nutrients to survive
C. Their molar shape changed to adapt to eating seals instead of berries.
D. All of the above
Answer:
d,d
Explanation:
all the things are all the above because they have those to help the bears survive
An adaptation that allows a polar bear to survive in this biome because their molar shape changed to adapt to eating seals instead of berries.
What do you mean by biome?A biome is a biogeographical unit consisting of a biological community that has formed in response to the physical environment in which they are found and a shared regional climate.
A biome is an area classified according to the species that live in that location. Temperature range, soil type, and the amount of light and water are unique to a particular place and form the niches for specific species allowing scientists to define the biome.
There are five major types of biomes: aquatic, grassland, forest, desert, and tundra, though some of these biomes can be further divided into more specific categories, such as freshwater, marine, savanna, tropical rainforest, temperate rainforest, and taiga.
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Name the localized root tissue that makes roots grow longer. (three words, spell out)
Which terms identify the role of Fe2+ in the body?
Answer:
no options but read below
Explanation:
Haemoglobin's primary role is to transport oxygen from the lungs to body tissues to maintain basic life functions. Without healthy red blood cells, your body can't get enough oxygen, and this can result in you feeling increasingly tired or exhausted.
Sugar, orange juice, and ice are all examples of matter.
Which is true about all three?
A.
They are in the liquid state.
B.
They are made of particles too small to be seen.
C.
They evaporate when they are combined with water.
D.
They are made of the same materials.
Sugar, orange juice, and ice are all examples of matter. The truth about all three is they are made of particles too small to be seen. The correct option is B.
Anything that fills space and has mass is referred to as matter; in other words, the matter is the "stuff" that the cosmos is made of. Elements are the fundamental building blocks of all matter.
They possess unique chemical and physical characteristics and cannot be converted into other elements through regular chemical processes. Anything that can be weighed and takes up space is considered the matter.
Therefore, the matter has both mass and volume. The universe is made up of a wide variety of substances and forms of matter.
Therefore, the correct option is B. They are made of particles too small to be seen.
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Select the correct answer.
What are riparian buffers?
A.
secondary crops planted in fields when the primary crop is ripe
OB.
secondary crops planted in fields after harvesting
C.
vegetation planted on ridges built along field borders
D.
vegetation planted at the edges of water channels
E.
vegetation planted on earthen embankments on slope
Answer:
it is c my friend good luck
Answer:
c is the correct answer
Explanation:
just took test
1. How does the equations help explain the role of
producers in the ecosystem?
1. Producers create energy for other organisms to consume.
2. Producers convert sunlight into usable energy and Nitrogen.
3. Producers convert carbon dioxide and water into sugar.
4. Producers create Carbon dioxide for other organisms.
2. Aerobic Cellular Respiration is important to organisms because
1. It allows plants to produce sugar for food.
2. It releases the oxygen needed by plants for photosynthesis.
3. It converts sugars to usable energy that all organisms need.
4. It helps animals digest the sugars when they eat plants.
Answer:
1. Producers create energy for other organisms to consume.
2. It converts sugars to usable energy that all organisms need
Explanation:
All living organisms require energy, which they obtain by feeding on one another in an ecosystem. The series of feeding steps involved is called FOOD CHAIN. Food chain always starts with an organism called PRODUCER, which is an autotroph i.e. capable of producing its own food by using light energy from sunlight e.g plants. All other organisms in the food chain are directly or indirectly dependent on plants to get energy. This is because plants and other autotrophs create the energy that is being transferred as the food chain progresses.
2. Cellular respiration is an important phenomenon for all living organism because it is the metabolic process by which they obtain the usable energy by their cells i.e. ATP. Food molecules in form of sugar (glucose) eaten by organisms are broken down in the presence of oxygen (aerobic) to yield ATP molecules, which is the energy currency of every living cell. This energy is used to perform the organism's life activities.
describe the conversion of energy when a robin eats blackberries NEED ANSWER ASAP (15 POINTS)
Answer:the energy from the sun goes to the plant than the plants energy goes into the robin because the robin consumed it.
Explanation:
If Jessica has light eyes (bb) and both of her
parents have dark eyes (Bb) which statement is
true?
A. Jessica inherited both genes from her father.
I
B.
Jessica inherited both genes from her mother,
C. Jessica inherited one recessive form of the
gene from each parent.
D.
Jessica inherited one dominant form of the
gene from each parent.
Answer:
D
Explanation:
Dominant and the recessive allele are the traits present in the genes that get inherited from the parent to their offspring.
The trait that is visible in the phenotype is called dominant while the trait that gets masked in the proximity of the dominant allele is called recessive.
The correct answer is:
Option C. Jessica inherited one recessive form of the gene from each parent.
This can be explained by :
The genotype of Jessica's eyes = bb (light)The genotype of her parents = Bb (dark eyes)See the attached image below for the cross:
The genes gets independently assorted and Jessica inherits the recessive form of the genes from both of her parent.
Therefore, Jessica inherited recessive gene one from each parent.
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How many chemical bonds can each carbon atom form?
Answer:
It has four valence electrons, which it can achieve a full outer energy level which forms four covalent bonds. When its bonds only with hydrogen, it forms compounds which is called hydrocarbons. Carbon can be form in single, double, or triple covalent bonds with other carbon atoms.
Explanation:
The valency of carbon is four. Therefore, carbon can form four chemical bonds.
What is a chemical bond?It is the attraction between two atoms, they share or exchange electrons to form molecules or compounds is known as a chemical bond. They share electrons to fulfill their valency. The number of bonds depends on the number of valencies.
There are three types of bonds and that are covalent, ionic, and metallic bond. A covalent bond or molecular bond is formed by sharing of electrons, it occurs in non-metals. Ionic bonds are formed by exchanging electrons, it occurs in both metal and non-metal. metallic bonds are present between two metals. The covalent bond is the strongest bond.
There are four valencies in carbon. Therefore, it can make four bonds.
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How are organisms in the domain Archaea different from those in the domain
Eukarya?
A. Archaea have DNA that is not in a nucleus.
B. Archaea have mitochondria inside their cells.
C. Archaea are multicellular organisms.
D. Archaea hold genetic information in DNA.
HELP ME ASAP
Answer:
A. Archaea have DNA that is not in a nucleus.
Explanation:
Archaea do not have a nucleus thus their DNA is in cytoplasm where as Eukarya have a full fledged nucleus
Answer:
A. Archaea have DNA that is not in a nucleus.
Explanation:
Eukaryotes are the organisms that have well defined membrane bound nucleus and other membrane bound organelles in their cells. The domain eukarya include both unicellular and multicellular organisms. Archaea include the unicellular prokaryotic organisms that lack the membrane bound nucleus and membrane bound organelles.
hope this helped!
give the name for the material that will fit into the secondary or regulatory site of an allosteric enzyme.
Answer:
Explanation:
Allosteric Enzymes Enzymes sometimes act as their own regulators. Such enzymes are known as allosteric enzymes. One such enzyme is aspartate transcarbamoylase (also known as aspartate carbamoyltransferase),
Which answer best indicates the dynamic balance of an ecosystem
what would be the most likely effect if the side chain of an amino acid group was unstable to vary its structure
second option
Explanation: my brain
Which statement best describes Mendelian or complete dominance?
When both the dominant and recessive allele shows.
When the dominant and recessive alleles mix to form a third phenotype.
When the dominant trait or allele completely masks the recessive allele.
Answer:
When the dominant trait or allele completely masks the recessive allele
Explanation:
Mendelian or complete dominance is a relationship of genes in which one allele of a gene pair that codes for a trait expresses itself over the other allele of the gene pair. The allele of the gene pair that expresses itself over the other is the dominant trait or allele, which completely mask the expression of the other allele called the recessive allele or trait.
In the pea plant experiment conducted by Mendel, complete dominance can be seen. For example, for seed color of pea plant, allele for yellow seed color was dominant over allele for green seed color.
Timber sold to finance war or as a tactic to oppress or exterminate those who live in the rainforest
is
O conflict timber
O Trade timer
O Migrant Timber
U
Question 3
0.43 pts
What microscopes uses one lens for magnification
There are two basic types of optical microscopes: simple microscopes and compound microscopes. A simple microscope uses the optical power of single lens or group of lenses for magnification.
hope it helps u
Which organelle is responsible for producing the energy for cellular processes?
A. organelle A
B. organelle E
C. organelle F
D. organelle G
Energy "moves from place to place." The term that describes this is___
a. Energy displacement
b. Energy transition
C. Energy transfer
d. Energy movement
Answer:
C. Energy transfer
Use the mass and density data to calculate the volume of corn syrup to the nearest tenth.
Mass of corn syrup = 57.3 g
Density of corn syrup = 1.38 g/mL
The volume of corn syrup is
mL.
Answer:
the correct answer is 41.5
Which type of tissue carries messages?
A. Nervous tissue
B. Connective tissue
C. Muscle tissue
D. Epithelial tissue
SUBN
Answer:
Nervous tissue
Nervous tissue is responsible for carrying messages throughout the body. It is made up of specialized cells called neurons, which are able to transmit electrical signals. These signals allow the body to respond to stimuli and coordinate its movements. Hence option A is correct.
Connective tissue provides support and structure to the body. It is made up of cells that are embedded in a matrix of fibers. The fibers can be made of collagen, elastin, or other proteins. Connective tissue can be found in many different parts of the body, including the bones, muscles, and skin.
Muscle tissue is responsible for movement. It is made up of cells that can contract and relax. There are three types of muscle tissue: skeletal muscle, smooth muscle, and cardiac muscle.
Skeletal muscle is attached to bones and is responsible for voluntary movement. Smooth muscle is found in the walls of internal organs and is responsible for involuntary movement. Cardiac muscle is found in the heart and is responsible for pumping blood.
Epithelial tissue covers the body and lines internal organs. It is made up of cells that are tightly packed together. Epithelial tissue protects the body from infection and helps to regulate body temperature.
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The highest level of cellular organization requires the cooperation of multiple.
cells or systems ?
How would the quantity of stomata compare between plants in tropical environments and plants in hot, arid climates? -Plants in tropical climates would have fewer stomata because they would need to prevent the absorption of too much water from the atmosphere. -Plants in hot, arid climates would have fewer stomata because they would need to prevent undesirable water loss from the plant leaves. -Plants in hot, arid climates would have more stomata because they would need to release heat from the leaves to prevent dehydration. -Plants in tropical climates would have more stomata because they would need to absorb more water from the air than plants in arid climates.
Answer:
-Plants in hot, arid climates would have fewer stomata because they would need to prevent undesirable water loss from the plant leaves.
Explanation:
I took the test and got this right.
The necessity to minimize unwelcome water loss from the plant leaves would cause plants in hot, arid areas to have fewer stomata. So, the correct option is B.
What is Stomata?The little apertures known as stomata are found just on epidermis of leaves. Stomata are visible under a light microscope. Stomata can be found on the stems and other portions of various plants. In exchange of gases and photosynthesis, stomata are crucial.
Because they need to take in more airborne water than plants in arid areas, tropical plants would have more stomata. Since they must prevent unwelcome moisture loss from plant leaves, plants in warm, arid climates would develop fewer stomata. The necessity to minimize unwelcome water loss from the plant leaves would cause plants in hot, arid areas to have fewer stomata.
Therefore, the correct option is B.
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Your question is incomplete, most probably the complete question is :
How would the quantity of stomata compare between plants in tropical environments and plants in hot, arid climates? -
-Plants in tropical climates would have fewer stomata because they would need to prevent the absorption of too much water from the atmosphere. -Plants in hot, arid climates would have fewer stomata because they would need to prevent undesirable water loss from the plant leaves.-Plants in hot, arid climates would have more stomata because they would need to release heat from the leaves to prevent dehydration.-Plants in tropical climates would have more stomata because they would need to absorb more water from the air than plants in arid climates.What are the main characteristics of amphibians?
Answer:
Amphibians are small vertebrates that need water, or a moist environment, to survive. The species in this group include frogs, toads, salamanders, and newts. ... The larvae are aquatic and free-swimming—frogs and toads at this stage are called tadpoles. At a certain size, the young develop limbs and lungs.
Explanation:
Answer:
undergo metamorphosis.,coldblooded and absorb water and undergo gas exchange
Which of the following trends show the relationship between deforestation and the Greenhouse Effect?
The bond formed from electrons that are transferred is a(n) _____.
Answer:ionic bond
Explanation: Ionic bonds form when electrons are transferred, covalent bonds form when electrons are shared. polar covalent bonds form when electrons are shared unequally (basically).
Answer:
Ionic Bond
Explanation:
Ions:
Those atoms which lose or gain(transfer) electrons are called ions.
Ionic Bond:
Ionic bond is the bond formed between two oppositely charged ions due to the result of transferring of electrons.
The function of starch is to...
A. aid the immune system.
B. store energy.
C. build proteins.
Describe the processes of transcription and translation.
Answer:
The process by which DNA is copied to RNA is called transcription, and RNA is used to produce proteins is called translation.
Explanation:
QUESTION 1
At what type of plate boundary do lithospheric plates slide against each other horizontally?
divergent
transform
convergent
3 points
QUESTION 2
Where do most transform faults occur?
interior of continents
at oceanic ridges
in the ocean near continental boundaries
3 points
QUESTION 3
The San Andreas Fault in California is an example of a transform fault that has developed where the Pacific Plate moves past the North American Plate.
True
False
2 points
QUESTION 4
The lithosphere is relatively cold along a transform fault, making brittle fracture of rock materials common.
True
False
2 points
QUESTION 5
Earthquakes that take place along transform faults release huge amounts of energy.
True
False
2 points
QUESTION 6
Most volcanism along transform faults originates from
melting of mantle as it rises to fill pull-apart basins
subduction of oceanic plates under continental plates
both a and b
3 points
QUESTION 7
A "leaky" transform system is one that has
active sedimentation
metamorphic activity
volcanic activity
3 points
QUESTION 8
Transform faults can offset spreading centers in oceanic crust by several kilometers in length.
True
False
2 points
QUESTION 9
At the ocean floor transform plate boundaries, which of the following can cause mineral recrystallization of basalt?
brittle fracture of rocks
upwelling magma
high heat and ductile deformation
3 points
QUESTION 10
Which of the following famous transform fault systems produces large earthquakes in Canada?
North Anatolian
Alpine
Queen Charlotte
Answer:
1.transform
2.at oceanic ridges
3.true
What is the name of the substance that a transported sediment moves through?
A. Fluid
B Medium
C. Glacier
D. Erosion
Answer:
i think it be glacier ...............
in the phylogenetic tree shown here, which of the following loci represents an ancestor shared by species 1 and 2 but not by species 3?
A. C
B. A
C. B
D. D
