Question

1) Choose the best answer.

A chronological system of measurement that scientists use to describe the timing of events and its relationship to life and the history of the earth is the ____.

gradualism

Geologic Time Scale

speciation

natural selection

2) Matching.

dating uses radioactive elements to
matter such as rocks and
. As the radioactive elements
, they turn into other elements. Scientist then use the ratio of the two elements to determine how old something is.

3) Choose the best answer.

A preserved life form from the past is a _________.

species

fossil

radioactivity

polyploidy

4) Choose the best answer.

Fossilization is _____.

the process of forming new species from an existing species

a theory that characterized by long periods without change, interrupted by periods of rapid change

the process of beneficial changes being passed

a process where evidence of dead plants and animals are preserved in rock

5) Select 5 that apply.

What are some different types of fossils? Select al that apply.

dust

animals

insects

plants

leaf imprints

skeletons

6) Choose the best answer.

Fragments of fossils are _____.

animals

skeletons

trace fossils

insects

7) Choose the best answer.

_______ organs are organs that have a common origin and the same fundamental structures, but can have varied functions.

Dichotomous

Homologous

Molecular

Radioactive

8) Choose the best answer.

The ____________ states that the growth of an embryo in the womb (ontology) follows the organism's evolutionary history (phylogeny).

Recapitulation Theory

natural selection

evolution

genetic drift

Answer 1

1) Geologic Time Scale

2) Radiometric dating uses radioactive elements to date matter such as rocks and fossils. As the radioactive elements decay, they turn into other elements. Scientists then use the ratio of the two elements to determine how old something is.

3) fossil

4) a process where evidence of dead plants and animals are preserved in rock

5) animals; insects; plants; leaf imprints; skeletons

6) skeletons

7) Homologous

8) Recapitulation Theory