Answer:
Crude oil is the main source
Explanation:
hope it helps
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What are the possible results of speciation?
Answer:
Speciation is an evolutionary process by which a new species comes into being. A species is a group of organisms that can reproduce with one another to produce fertile offspring and is reproductively isolated from other organisms. Speciation can be driven by evolution, which is a process that results in the accumulation of many small genetic changes called mutations in a population over a long period of time. There are a number of different mechanisms that may drive speciation. One of these is natural selection, which is a process that increases the frequency of advantageous gene variants, called alleles, in a population. Natural selection can result in organisms that are more likely to survive and reproduce and may eventually lead to speciation. A second process called genetic drift describes random fluctuations in allele frequencies in populations, which can eventually cause a population of organisms to be genetically distinct from its original population and result in the formation of a new species.
Explanation:
Which answer helps to explain why carbon atoms tend to make 4 covalent bonds
Answer:
Carbon atoms tend to make 4 covalent bonds because the valence shell needs 8 electrons.
Explanation:
For atoms to be stable, they must have filled outermost energy shells called valence shells. This is called the octet rule.
A man and a woman have recently married , unfortunately they didn't have any children yet. What do you think are the reasons for delayed pregnancy ?
Answer and I will give you brainiliest
Answer:
Late ovulation
explanation
it can delay pregnancy, but that doesn’t mean it won’t happen. It’s entirely possible to conceive when you ovulate later in the cycle; the trick is to be as in tune with your body as possible. By knowing exactly what to look out for, you'll soon be able to tell when you are eventually ovulating.
"Several common reasons for a late period include stress, low body weight, obesity, different hormonal syndromes, birth control, and chronic diseases,"
Plzzzz help i really need it
Answer:
3
Explanation:
For tetracycline , describe an experiment that you could
use to determine if a bacterial sample taken from a person was
resistant to your antibiotic. Be sure to describe all steps of the
experiment including your independent, dependent and control
variables.
Answer:
penicillin was the first antibiotic discovered. Alexander Fleming discovered it in 1928. It was used widely during World War II. However, the sulfonamides were the first antibiotic class used clinically (in the 1930's). The discovery of antibiotics revolutionized medicine by making once-deadly infections treatable. There are now hundreds of antibiotics, classified into several categories. These antibiotic classes include:
Explanation:
sana makatulong!
The Earth is the only planet known to support life. Which of the following is a major contributing factor to the Earth's ability to support
life?
A) The Earth has a magnetic field with north and south poles
B) The earth has an iron-rich core and is made mostly of rock
C) The Earth orbits the Sun and is orbited by the moon
D) The Earth is surrounded by a layer of air that includes oxygen
Answer:) The Earth has a magnetic field with north and south poles
Explanation:
What occurs when Two species have the need for the same resource
Answer:
Competition
Explanation:
since they need the same resource they will have to fight for it.
good luck on your mid-term!! i know it's quite stressful. but you can do it :)
Answer:
c
Explanation:
help help help help help
secondary statement makes a seem correct
The most recent evidence supporting the theory of plate tectonics would include
A)
GPS monitoring of plate speeds and movements.
B)
the WWII discovery of paleomagnetic reversals.
0)
the 1963 mapping of the tectonic plate boundaries.
D)
C-14 dating of marine fossils found in the Himalayas.
Answer: The answer is A GPS monitoring of plate speeds and movements.
Explanation:
Which of the following size of stars will survive the longest?*
less massive stars
medium sized stars
more massive stars
5. A duck flies 60 meters in 10 seconds. What is the duck's speed? a. 600 m/s b. 50 m/s c. 6 m/s d. 70 m/s 10 Dointe
Answer:
Duck speed =60m/10s
=6 m/s
Explanation:
The work-dock of the cell where proteins are made are?
A. Ribosomes
B. Lysosomes
C. Mitochondria
D. Golgi
Answer:
A.Ribosome
Explanation:
I hope that help
The work-dock of the cell, where proteins are made, is Ribosomes. The correct option is A.
What is ribosome?Ribosomes are small spherical organelle present in the cells. Ribosomes are the place where the synthesis of protein occurs. Ribosomes are present at the end of the endoplasmic reticulum.
Thus, the correct option is A.
Learn more about ribosome
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The tomato plant and the oxalis plant both achieve a maximum CO2 utilization rate. Why do you think higher and higher light intensities do not cause an over increasing of CO2 use?
Answer: Higher and higher light intensities do not cause an over increasing of CO2 use because of other RATE LIMITING FACTORS that affects it's utilisation.
Explanation:
The tomatoe and the oxalis plants are examples of flowering plants which manufactures it's food through the process of photosynthesis. The conditions necessary for photosynthesis to occur leading to the production of starch and oxygen includes:
--> presence of sunlight
--> presence of carbondioxide
--> presence of chlorophyll and
--> presence of water.
The above conditions are factors that can affect the rate of photosynthesis occuring in a plant. Increasing a particular factor can lead to another factor being limiting. An example is the effect of increased light intensity on carbondioxide utilisation. Increase in light intensity could lead to excess evaporation of water from the plant. This will interfere with the light stage of photosynthesis by affecting photolysis of water. If this occurs, carbondioxide won't be reduced to form sugar in the dark stage of photosynthesis since there won't be hydrogen provided by the co-enzyme NADP (Nicotinamide adenine dinucleotide phosphate).
is it true that species a and b belong to the same kingdom but different phyla
Answer:
yes it is true
Explanation:
Which shape is most similar to that of DNA?
A chicken egg
A line of spheres, each smaller than the one before it
A series of figure eights wound around each other
Two wires twisted together
Answer:
in my personal opinion, i think what the shape of DNA best compares to is:
c. a series of figure eights wound around each other.
hope that helps :)
this is my first answer on brainly btw !
Describe the difference between the melting points of ethene and poly (ethene)
Answer: Poly(ethene) has a higher melting point than ethene. The reason can be seen in the explanation below.
Explanation:
Ethene is one of the most important alkene hydrocarbons which is one of the main products obtained during the cracking of the gas oil fraction of petroleum.
Polymerization is a process whereby two or more simple molecules are linked to form a much larger molecule usually called polymers. Poly( ethene) is formed when ethene and it's derivatives undergoes polymerization reaction. Therefore poly( ethene) is a polymer of ethene.
To describe the reason why there is higher melting point in poly (ethene) than ethene is that poly( ethene) consists of very long chain carbon atoms which are held together by a strong covalent bonds. There are greater intermolecular forces between the long chains compared with smaller simple molecules like ethene.
What you know about photosynthesis
Answer:
1. Plants use photosynthesis.
2. Photosynthesis uses water, carbon dioxide, and sunlight to make sugar.
3. Photosynthesis makes oxygen for animals to breathe.
In cats produce many different coat colors. Tabby fur color can be produced by AA or Aa, black is aa. Another gene pair is epistatic to the gene for fur color. When present in its dominant form (WW or Ww), this gene blocks the formation of fur color resulting in offspring with white fur (ww offspring have normal fur). Determine the proportions of offspring from the following cross:______.
AaWw x AaWw.
(Assume no gene linkage).
Answer:
giao
i don't know, don't ask me
Explanation:
A population of 6000 ants lives inside a dead log that measures 3 square meters. What is the population density of the ants?
Answer:
2000 ants per square meters.
Explanation:
The population density, D, of a population can be calculated by dividing the total number of individuals by the area covered by that population. That is;
D = N/A
Where;
D = population density
N = population of individual organism
A = area covered (m²)
According to this question, a population of 6000 ants lives inside a dead log that measures 3 square meters. Hence, N = 6000 ants, and A = 3m²
Therefore, the population density (D) = 6000/3
= 2000
The population density is 2000 ants/square meter.
Name the blood vessel which supplies the heart muscle with blood.
Answer:
Coronary arteries supply blood to the heart muscle.
Explanation:
treating id :-852 664 6696 Passoodi :123
Answer:
Y=mx+b
Explanation: alr
how can fear be a barrier to help seeking
Explanation:
Fear is a barrier as people fear being judged for things as there might be a stigma attached to it. When people are judged their problem isn't solved and instead worsened and they will feel compelled to keep their problems to themselves.
1. All proteins are made up of 20 amino acids, but still, some protein takes up the function of the enzyme and some act as a transport protein. What determines protein functioning?
Answer:
ribosomes
Explanation:
The scientific name for a giraffe is Giraffa camelopardalis. What two levels of
classification does this name represent?
A. Family & order
B. Kingdom & genus
C. Phylum & domain
D. Genus & species
Answer:
Genus and species are the two levels of claffication does the name giraffa represents
Joel notices that there is not much difference between low and high tide. what is happening?
Please be nice
Answer:
This is the spring tide: the highest (and lowest) tide. Spring tides are not named for the season. This is spring in the sense of jump, burst forth, rise. So spring tides bring the most extreme high and low tides every month, and they always happen – every month – around full and new moon.
Explanation:
The process where the organism with the best traits survives and passes on its DNA is:
Evolution
Adaptation
Natural Selection
Variation
Which of the following could help reduce waste buildup in heavily populated areas?
A.
packing your lunch in a reusable bag instead of a paper bag
B.
using washable dishes rather than disposable plates and utensils
C.
recycling paper, plastics, metals, and glass
D.
all of these
Answer:
I think its option 3
Explanation:
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Types of histokinate
Answer:
moving tissue type,moving fluid type,processing of tissue
How a forest ecosystem would change if no sunlight were available to it
Explanation:
If there is no sunlight the plants will die. Then because of dead plants the herbivores will die and so on. the food chain will be very disrupted.
Most of the hydrosphere is in what form?
freshwater
ocean water
groundwater
ice
Answer:
Ocean water
Explanation:
97.5% of the earth's water is contained in the ocean.
