Which fossil would most likely be found in the oldest rock layer?

A) flying dinosaur

B) mastodon

C) trilobite

D) saber-tooth cat

The arrangement of organisms into orderly groups based on their similarities is called

Gregor Mendel used pea plants to study a. flowering. c. the inheritance of traits. b. gamete formation. d. cross-pollination.

What is not a possible indicator of a biological agent? select one: abandoned spray devices unusual number of sick or dying people an outbreak of psoriasis unscheduled and unusual spray being disseminated

Did bryophytes evolve from algae?

Methamphetamines are a type of drug that affects the brain by A. causing the release of excess dopamine. B. blocking the production of dopamine. C. increasing the number of dopamine receptors. D. increasing the number of synapses in the brain.

When a fly lands on a leaf of a Venus fly trap (Dionaea muscipula), the leaf closes. This is an example

How Do Cells Get Energy How do cells get energy?

What do manufacturers use water for? A. to transport people B. to irrigate farms C. to create tools D. to produce wood and paper products

Two hydrogen bonds are formed between all base pairs (C to G and A to T). a. true b. false

Why do we need so many muscles in our hands wrists and arms?