17. The picture below shows how carbon cycles through the environment. Which of the following statements is true?

Hurry which of these is true about index fossils? a) are very scarcely found b) used as guides in relative dating c) found in the youngest layer of the rock d) used as reference points in absolute dating

Which of the following happened during the precambrian era? the first prokaryotic cells the first eukaryotic cells development of photosynthesis all of the above

What two factors does carrying capacity compare? population size and resource use population growth and resource availability resource use and time population size and time