Unit 1 - 8th grade

8th grade review

Unit 1: Change over time

start

1/10

The Principal of Superposition states that in an undisturbed sequence, the oldest layers are at the bottom meanwhile the youngest are at the top of these ones.

True

False

10

2/10

The remains of living plants or animals are called:

Antique

Index fossils

Fossils

10

3/10

Can a geologist match layers in different areas because of correlation?

NO

yES

mAYBE

10

4/10

Most mutations occur randomly and are not harmful all the time.

tue

false

10

5/10

Adaptations are inherited traits that help species to survive in an environment. And these adaptations happen little by little.

True

false

10

6/10

This occurs when the last individual organism of a spieces dies.

conservation

evolution

extinction

10

7/10

What is the process by which individuals with variations that help them to survive in their environments live longer, compete better, and reproduce better than those that do not have variations

mutations

Artificial Selection

natural selection

10

8/10

In the DNA there are four nitrogen bases: Adenine, Cytosine, Thymine and:

Guanine

Sugar

phosphate

10

9/10

When there is a change in the population over time we can say that is mutation.

True

false

10

10/10

Homologous structures may have different origins but they look and act the same

false

true

10

WRONG

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