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NikAS [45]
3 years ago
13

Describe the composition of the core of the Earth.

Biology
1 answer:
fgiga [73]3 years ago
8 0
I believe it is the second one not 100% sure so don't blame me if you fail.
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Which type of vessel is most suited to expanding and recoiling in response to the ejection of blood from the heart?
AleksandrR [38]

The elastic artery absorb most of the shock when the heart ejects blood. The expansion stores energy; the recoil disperses this energy by moving blood further through the circulation.

8 0
3 years ago
Why does the survival of species depend more on populations than on the life spans of individual organisms
geniusboy [140]

Answer:

The survival of a species depends more on the population because a population contains many type of organisms of the same species. Some of them are better adapted to survive the conditions provided by the Earth and hence, they live and produce offsprings with the favourable traits. The members of a population which are not better adapted mostly do not survive.

Hence, the survival of a species depends on the population where it is living.

3 0
4 years ago
The ecological efficiency at each trophic level of a particular ecosystem is 20%. If the green plants of the ecosystem capture 1
Allushta [10]

Answer:

1. 20 units

2. 4 units

Explanation:

In an ecosystem, energy is transferred from one organism occupying a trophic level to another as they feed on one another. The amount of energy that is being transferred as the chain progresses is called ECOLOGICAL EFFICIENCY. According to this question, the ecological efficiency at each trophic level of the ecosystem is 20%. This means that about 20% of energy units will be transferred to the next trophic level.

If the green plants of the ecosystem capture 100 units of energy, the amount of energy that will be available to support herbivores (plant eaters) is: 20% × 100units i.e. 20/100 × 100 = 20 units.

Also, the amount of energy that will be available to support carnivores subsequently will be 20% of 20 units i.e. 20/100 × 20 = 4 units.

4 0
3 years ago
A scientist is examining a tissue sample under a microscope. The tissue has a good blood supply, and material secreted by the ce
Artyom0805 [142]

Answer:

Connective Tissues

Explanation:

According to my research on studies conducted by various medical professions, I can say that based on the information provided within the question this scientist is most likely looking at Connective Tissues. These are tissues in which material secreted by the cells is fills up the spaces between the cells, thus connecting or binding otherwise separate tissues or organs. Which is what the scientist seems to be describing.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

7 0
3 years ago
The concept of __________ means that because of their genetic makeup, individuals differ in their responsiveness to qualities of
Leni [432]

Answer: Behavioral genetics

Explanation: This concept indicates that our genes influence our environment and in return, the environment influences our genes. Behavioural genetics has therefore expressed gene-environment interactions on the behaviour of an individual.

3 0
4 years ago
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