Life Science - 8th Grade Science

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Question

What is the process that enables organisms that are best suited for the environment to live and pass on their genetic traits.

Answer

Natural Selection is the process that enables organisms that are best suited for the environment to live and pass on their genetic traits.

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Question

What is characterized as a mistake or change in an organism's DNA?

Answer

A mutation is characterized as a mistake or change in an organism's DNA.

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Question

Fill in the blank:

When a species becomes better suited to its environment, it's said that the species has __________.

Answer

Adaptation is the processes in which a species becomes better suited to its environment; thus, the correct answer is adapted.

When a species becomes better suited to its environment, it's said that the species has adapted.

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Question

Which of the following is a cause of extinction?

Answer

There are many causes of extinction. Agriculture, habitat fragmentation, and deforestations are all causes of extinction.

Agriculture causes extinction by emitting toxins into the environment.

Habitat fragmentation causes extinction by changing an animals habitat. Usually, habitat fragmentation is caused by development breaking apart an animal's habitat.

Deforestation causes extinction by taking away animals's habitats. Deforestation is when forests are cut down.

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