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matrenka [14]
3 years ago
9

One theory of human evolution suggests that Homo erectus evolved directly into Homo sapiens (humans), after which point Homo ere

ctus became extinct. If this is true, humans arose by ________.
a. allopatric speciation
b. cladogenesis
c. anagenesis
d. parapatric speciation
Biology
1 answer:
Reptile [31]3 years ago
5 0

Answer:

The correct answer will be option-C.

Explanation:

The evolution of human species in which one species transformed into another species evolves by a mechanism known as anagenesis.

Anagenesis is the mechanism of evolution which transform one species into a different species within a lineage. This process is slow and takes time to form species, therefore, is also known as gradualism or phyletic transformation.

The<em> Homo sapiens</em> evolved from<em> Homo erectus </em>where<em> Homo sapiens </em>overwrites the ancestral species and caused the species to become  extinct.

Thus, Option-C is the correct answer.

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The nervous system is made up of all the nerve cells in your body. It is through the nervous system that we communicate with the outside world and, at the same time, many mechanisms inside our body are controlled. The nervous system takes in information through our senses, processes the information and triggers reactions, such as making your muscles move or causing you to feel pain. For example, if you touch a hot plate, you reflexively pull back your hand and your nerves simultaneously send pain signals to your brain. Metabolic processes are also controlled by the nervous system.

Explanation:

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Cell walls in plant cells provide support and structure for the cell, allowing plants to 'stand up' without a skeleton. What are
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Explanation:

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2 years ago
Consider a hypothetical food chain consisting of grass, rabbits, and foxes. The primary productivity of the grass is 200 units.
STALIN [3.7K]

The maximum amount of energy that we should expect to be recycled from fox trophic level back to the grass trophic level is 0 units.

A food chain describes who eats whom in the wild. Every living thing – from unicellular algae to giant blue whales – needs food to survive. Every food chain is a possible pathway that energy and nutrients can travel through an ecosystem. The primary productivity of the grass is 200 units. There is a 10 fold decrease in the amount of energy units as we move upwards in production chain. So from grass to rabbits we lose energy. The foxes will only really have two units once it's decreased by 10 fold again. The grass does not get any energy from the decaying bodies of foxes, they get the minerals that they need to grow.  And so the correct answer to this question is 0 units because when the energy gets recycled from fox trophic level back to the grass trophic level it will be totally reduced.

Note: The question seems to be incomplete. So the complete question is "Consider a hypothetical food chain consisting of grass, rabbits, and foxes. The primary productivity of the grass is 200 units. What is the maximum amount of energy that we should expect to be recycled from the fox trophic level back to the grass trophic level? Answer choices: A) 0 units B) 0.2 units C) 2 units D) 20 units"

Learn more about food chain on:

brainly.com/question/16065961

#SPJ4

4 0
2 years ago
Please help with this question!!!
yKpoI14uk [10]

Answer:

b the best answer

Explanation:

the best answer

7 0
2 years ago
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