The two structures that limit transpiration are known as

a. Guard cells and xylem

b. Stomata and guard cells

c. xylem and phloem

d. stomata and phloem

Which organism appeared on Earth first? gastropods horn corals brachiopods crinoids

5) The chemical process for respiration A) releases ADP. B) releases energy. C) releases oxygen. D) releases glucose.

Name three of the cultural areas scientists refer to when discussing native americans

What does a scientist do if I a hypothesis is supported

Multiple Choice - Why do some flies live only 12 hours and others live 30 hours without food? a. because some flies ate more food before the food was removed b. because there is variation in the population for starvation resistance c.

How does efficiency and conservation work together?

A nurse is administering medications to a client diagnosed with hepatitis b. when the nurse hands the client his/her medications, the client says, "i would rather not take that pill or any others. i know there is no cure for hepatitis b.

Differences between an artificial and a "normal" heart.

The receptive surface for pollen on an angiosperm flower is the (A) anther (B) corolla (C) ovary (D) style (E) stigma

Both liquids and ___ exert a buoyant force