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Alla [95]
3 years ago
6

According to scientific evidence, earth’s earliest atmosphere lacked oxygen. Over time, oxygen was added to the atmosphere. Whic

h statements explain how this change occurred and how it affected life on earth? Choose all answers that are correct.
a. The addition of oxygen to the earth's atmosphere helped make possible the development of eukaryotic organisms, which need oxygen to carry out many of their life processes.
Biology
1 answer:
Vikentia [17]3 years ago
4 0
<span>According to scientific evidence, earth’s earliest atmosphere lacked oxygen. Over time, oxygen was added to the atmosphere. Which statements explain how this change occurred and how it affected life on earth? Choose all answers that are correct. A. The addition of oxygen to the earth's atmosphere helped</span>
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A woman is training to improve her running capabilities for an upcoming marathon. She is progressively increasing the distance a
Ilya [14]

Answer:

The correct option is d. Metabolic specificity .

Explanation:

The specificity principle says that we must train the physical qualities (physiological elements involved) in the concrete conditions that the competition demands. Accordingly, the impact on muscles and metabolic pathways not used directly during exercise is very small. Metabolic specificity is a principle of adaptation and it applies to the energy systems mobilized during the exercise. The muscle mass involved and the overall intensity of the exercise will dictate whether the responses to training will be limited to adaptations at the muscular level or if adaptations will occur at the cardiovascular level. Continuous aerobic training of submaximal intensity is reflected in the increase in the activity of oxidative metabolism enzymes. The running speed of a marathon is regulated by aerobic metabolism in the recruited muscle fibers and by the economic conversion of this energy into speed. Increasing the distance and time of her races progressively allows the endurance athlete to exercise at a high intensity for significantly longer periods of time.

7 0
3 years ago
consider The response of a plant cell in a hypotonic solution as seen here. imagine a human red blood cell being placed in the s
4vir4ik [10]
The red blood cell will be more exposed to oxygen making it a lighter color. ur veins r full of dark red blood and white blood cells (which are donut shaped)
3 0
4 years ago
Suppose a butterfly with 16 chromosomes is able to produce offspring. How many chromosomes would the offspring receive from each
Stella [2.4K]

The irght answer is 8.

Each parent will give half of its chromosomes to its offspring through the gametes (which are haploid cells, containing n chromosomes) which will then fuse (male and female gametes) to form a diploid 2n chromosome cell and will eventually give rise to a new individual.

So each parent will give 8 of these chromosomes to their offspring.

5 0
4 years ago
Read 2 more answers
A carbon sink is a place where carbon Select one: a. is stored after removal from the atmosphere. b. is released after cellular
sashaice [31]

Answer:

A. is stored after removal from the atmosphere

Explanation:

A carbon sink is a place where carbon is stored after removal from the atmosphere. Carbon is stored in a carbon sink when they are removed from the atmosphere.

A carbon sink are reservoir (usually natural) where carbon is stored. Carbon sink store carbon because of their ability to absorb more carbon. Examples of carbon sinks are plants and water. Plants and water has the capability to absorb more quantity of carbon from the atmosphere and release less quantity of carbon.

Carbon is a chemical elements represented by the symbol C. It has the atomic number 6 and belongs to group 14 of the periodic table.

5 0
3 years ago
A woman who is at 36 weeks of gestation is having a nonstress test. Which statement by the woman would indicate a correct unders
dezoksy [38]

Answer: D. None of the above

Explanation:

The nonstress test is done to determine the fetal movement, heart rate and activities inside the mother's womb. It is prenatal test which is used to check the fetal health. This test places no stress over the fetus and the mother. It is done after 26 to 28 weeks of pregnancy. The mother does not require to have a full bladder for the test. As this test do not put physical and mental stress on the body of mother thus the mother may go home alone. This test cannot be used for diagnosis of genetic disorders like Down syndrome or neural tube defect.

4 0
3 years ago
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