Answer:
1) B. extreme temperature change
2) D. living things in that ecosystem
3) B. the smaller herbivore population will decrease
4) B. the loss of a river system due to contamination
5) B. die out in the area
Explanation:
Modest Disturbances in Ecosystems Quick Check
100% :)
extreme temperature change s an extreme disturbance to any ecosystem.
what is ecosystem ?
An ecosystem can be defined as a community of living organisms concurrence with non-living components, interacting with each other in an environment.
The structure of an ecosystem composed of both biotic and abiotic components which include the distribution of energy in our environment, climatic conditions prevailing in that specific environment.
The structure of an ecosystem can be divided into two components such as Biotic Components and Abiotic Components
both biotic and abiotic components are interrelated with each other in an ecosystem,. it is an open system where the flow of energy and components occur throughout the boundaries.
The functions of the ecosystem include regulates the essential ecological processes, responsible for the cycling of nutrients between biotic and abiotic components, maintains a balance among the various trophic levels in the ecosystem.
For more details regarding ecosystem, visit
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Which of the following is a problem faced by the global economy? A. Decreasing cost of renewable resources O B. Increasing greenhouse gas emissions C. Increasing environmental awareness D. Decreasing human population
Answer:
B. Increasing greenhouse gas emissions
Explanation:
Increasing greenhouse gas emission leads to the global warming which is not only harmful for environment but also harmful for global economy.
Increasing emission of greenhouse gases rises the CO2 levels in the atmosphere which lowers the nutritional value of crops and highly affects the agricultural economy of the globally.
Greenhouse gases increases demand of space cooling which eventually decrease the demand for space heating, which is very costly.
Increasing emission of greenhouse gases has direct impact on climate change and climate change has indirect impact on several sectors which affect economy globally such as mining, manufacturing, trade, and finance.
Hence, the correct answer is "B. Increasing greenhouse gas emissions".
Please help! original answers only please!
How would your chromosomes compare to someone else’s chromosomes?
Answer: since im a male i have an x and y chromosomes and females have x and x if you are female you can reverse this to go your way
Explanation:
Many people who own pet fish put a pondweed called Elodea canadensis in their
fish tanks. This species of pondweed produces an extremely high amount of oxygen.
If many fish were placed in a tank without this species of pondweed or a filter, what
would likely happen?
Answer:
In the scenario given above, Elodea Canadensis which produces extremely high amount of oxygen is used in raising fishes placed in a tank. This oxygen is needed for easier living in the tank. In a situation whereby the Elondea Canadensis is not present in the tank, the fish would struggle to leave comfortably in the tank. with time, the water will become clouded with carbon-dioxide. This would lead to the fish dying due to lack of oxygen.
Explanation:
Question 16 What type of mutation has occurred in the following example? Original DNA Sequence TIC G|GICIT AGGICA Mutated DNA Sequence ACG GCTA G G C A ? T A) deletion mutation B) Insertion mutation C) point mutation Question 17
Answer:
c
Explanation:
:).
I need help with #4 I will give brainliest
Answer:
Back in the frontier days there was very little concern about water shortages. People did not have too worry about not having enough water. Today people do have to keep in mind how much water they are using. some people do worry about not having enough water.
Explanation:
Hope this helps
Explain- Why are tobacco,alcohol and ultraviolet radiation listed as carcinogens in the table?
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Awarding points and brainliest answer
Phenotypic similarity does not always reflect evolutionary relationships due to:
Check all that apply
Are the answers B and C?
A) variation in rates of evolutionary change among species
B) homoplasy
C) convergent evolution
D) outgrouping
Answer:
A po
Explanation:
hope its help you with
Which of the following best describes the velocity of an object?
30 m east
30 m/s2
30 m/s
30 m/s east
Answer:
The correct answer is :B
Explanation:
I just know it is so trust me :)
The following statement from the video suggests the use of which standard of science to assess RELIABILITY?
"Simulation experiments can not tell us exactly how life formed in the past, but if enough of them are done it could eventually tell us if it's possible for life to emerge from chemistry"
options:
Empirical & Measurable Evidence
Sufficient Sample Size
Replication of Results
Concept of Falsification
Answer:
number three,3,option3
Explanation:
describe the effects that fire in the temperate grasslands biome has on grasses and on trees
Answer:
When fire is suppressed, the vegetation eventually converts to scrub and dense forests. Often, the restoration or management of temperate grasslands requires the use of controlled burns to suppress the growth of trees and maintain the grasses. Burning causes new grass to grow, which brings back the grazing animals.
Explanation:
Which of these is evidence of sea floor spreading?
A Mt. Fuji Japan
B Great Rift Valley in Africa
C Mid Atlantic Ridge
D Mt. Everest Nepal
Describe how the egg gets from the ovary to the site of fertilisation.
Answer:
The ovaries produce the egg cells, called the ova or oocytes. The oocytes are then transported to the fallopian tube where fertilization by a sperm may occur. The fertilized egg then moves to the uterus, where the uterine lining has thickened in response to the normal hormones of the reproductive cycle.
Explanation:
I hope it helps you *(^ - ^ )*
Which of the following is a direct economic advantage associated with aquaculture?
A
Aquaculture breeds genetically modified fish to increase the
amount of biodiversity in the population.
B
Aquaculture reduces the number of fishing operations in an area.
С
Aquaculture produces large amounts of seafood for human
purchase and consumption year-round.
D
Aquaculture requires large bodies of water for its operations.
Answer:
c Aquaculture produces large amounts of seafood for human
purchase and consumption year-round.
Explanation:
Most seafood produced via aquaculture is destined for human consumption, which has added to the sector’s momentum. The ability to dependably harvest many different species of finfish, shellfish and aquatic plants has also facilitated gains for the world’s aquaculture industry.
What is the is the difference between the littoral and limnetic zone?
Answer:
The topmost zone near the shore of a lake or pond is the littoral zone. The near-surface open water surrounded by the littoral zone is the limnetic zone. The limnetic zone is well-lighted (like the littoral zone) and is dominated by plankton, both phytoplankton and zooplankton.
Explanation:
Please help #4.
If you help me i will love you
the answer is pancreas
Answer:
D. Brain
C. Pancreas
Explanation:
Your brain regulates the hormones produced by the pituitary gland. your pancreas produces hormones to help digestion.
write a note on profundal zone
Answer:
Profundal zone is the deep water zone of any lentic water body i.e. lake or a pond where the light can no longer penetrate because it is located below the range of effective penetration of light mostly below the thermocline. The lack of light and oxygen determines the type of biological community living there
Learning Task 6: Complete the chart. Copy this in
your answer sheet.
Answer:
Canopy
Sub-canopy
Understory
Floor of the forest
Explanation:
Canopy refers to the aboveground portion of a plant or crop such as stem, leaves, branches and flowers etc.
Sub-canopy refers to those plants which are present below the trees due to their lower size such as small trees and large shrubs etc.
Understory is the vegetation that is present on underlying layer in a forest such as herbs etc.
Floor of the forest is mainly consists of shed vegetative parts of shrubs and trees, such as leaves, branches, bark, and stems etc. These parts exists in various stages of decomposition present above the soil.
It needs water vapor
in order to form
Explain how it is possible for the north pole to receive insolation for 24 hours for 6 months, yet it
still remains cold.
I
Answer:
Because they don't receive direct sunlight even during the summer months the sun is relatively low on the horizon
1) Mitosis is used in the process of growth. Give two other processes that use mitosis. (2 marks)
2) Describe how the chromosomes of a human cell produced by meiosis differ from the chromosomes of a human cell produced by mitosis. (2 marks)
Answer:
1)I)replacing dead cells
ii)cell division in the liver
2) in meiosis, there are 23 chromosomes
in mitosis, there are 46
2. What is true about the temperature in a tropical rainforest?
A. Average temperature are between 75 and 80 degrees Fahrenheit (F)
B. Temperatures change drastically throughout the year
C. It is typically cold and frosty
D. Average temperatures can be anywhere between 0 and 100 degrees F
Explanation:
its typically cold and frosty
What causes cells in living organisms to be different from one another?
O A An organism evolves new cell types in response to its environment
O B. The brain of an organism sends a signal to its cells to differentiate when the organismis in danger.
O c The DNA of an organism moves from one cell to another, allowing different cells to have different functions
O D. An organism expresses different genes at different times in development, causing cells to be specialized
Explanation:
The cell types in a multicellular organism become different from one another because they synthesize and accumulate different sets of RNA and protein molecules. They generally do this without altering the sequence of their DNA.
A parent with freckles is crossed with a parent without freckles. The Punnett square shows the possible genotypes and phenotypes of the offspring. Which statement accurately describes the probability of phenotypes?
The offspring are more likely to have freckles.
The offspring are more likely to have no freckles.
The likelihood of the offspring having freckles and not having freckles is the same.
The likelihood of the offspring having freckles and not having freckles cannot be determined.
Answer:
The likelihood of the offspring having freckles and not having freckles is the same.
Explanation:because
Answer: The person is correcrt also!!!
Explanation:
What do you think the term gene expression means? How do you think the term relates to the total number of genes a human inherits from his or her parents?
Answer: Gene expression is how genes are expressed in an organism. This relates to the total number of genes from each parent because the number of genes from each parent determines how your genes are expressed physically.
Explanation:
Identify 3
similarities of plant
and animal cells.
One species digs a hole for food. Another small species comes along and makes a home out of the hole that was left. What type of relationship is this an example of?
Answer: Commensalism
Explanation: Good luck! :D
List the layers of Earth’s atmosphere in order of increasing altitude.
A.
troposphere, stratosphere, mesosphere, thermosphere, exosphere
B.
exosphere, thermosphere, mesosphere, stratosphere, troposphere
C.
troposphere, stratosphere, mesosphere, exosphere, thermosphere
D.
stratosphere, mesosphere, thermosphere, exosphere, troposphere
Answer:
A
Explanation:
These are the correct layers in order of increasing altitude.
Answer:
Ionosphere
Explanation:
The temperature in the ionosphere increases as altitude increases. In the ionosphere, a layer known as the thermosphere starts. The name thermosphere comes from the temperature increasing as altitude increases.
Which part of a plant cell contains chromosomes?
Answer:
Its the nucleus.
Not all traits are determined solely by genes. Many traits have been found to exhibit phenotypic plasticity, which
occurs when individuals with the same genotype exhibit different phenotypes in different environments. Which of the
following is an exampleof phenotypic plasticity?
Well-maintained hedges can be shaped into artistic displays.
O A person who experienced malnutrition as a child is short in stature as an adult.
O Bears living in the arctic developed white fur and cold tolerance over many generations.
Certain breeds of dog have been bred for specific traits, such as poodles being bred for intelligence.
Answer:
O A person who experienced malnutrition as a child is short in stature as an adult.
Explanation:
Height is a quantitative trait, i.e., a phenotypic trait that depends on the combined action of many genes and the environment. Moreover, phenotypic plasticity can be defined as the ability of one genotype to produce different phenotypes in different environments. In consequence, quantitative traits are influenced by environmental factors and exhibit phenotypic plasticity. Quantitative traits are characterized to have a large variety of phenotypes and follow a normal distribution (a bell-shaped curve) when they are drawn.
Plants use chlorophyll during photosynthesis to absorb ------------
choices
A. sugar
B. light
C. water
Answer:
B. Light
Explanation:
In addition to giving plants their green color, chlorophyll is vital for photosynthesis as it helps to channel the energy of sunlight into chemical energy. With photosynthesis, chlorophyll absorbs energy and then transforms water and carbon dioxide into oxygen and carbohydrates.
Answer:
B. light
Explanation:
chlorophyll job is to absorb light from the sun
