Where can the element carbon be found? A. Carbon is only found in the atmosphere as part of carbon dioxide.
B. Carbon compounds are found in all living organisms.
C. Most carbon is dissolved in the oceans.

Which of the following sex and generation combinations directly produces the pollen tube of angiosperms? a) male gametophyteb) female gametophytec) male sporophyted) female sporophyte

How do cells grow and reproduce to maintain homeostasis?

Rarefaction is used for which of the following? a. creating a representative sample b. studying how disease impacts populations c. rediscovering species thought to be instinct d. determining which sea creatures live in an area