In what geological era did mammals expand on earth? a.)cenozoic b.)mesozoic c.)paleozoic d.)phanerozoic

The health, management and conservation of biodiversity, is a challenge facing ecosystems worldwide. the major factors that affect the health and function of the great barrier reef are climate change and pollution. which question investigates the effects of a biotic factor on the reef ecosystem?

In what part of a chloroplast does glucose production occur? a. atp synthase b. photosystem ii c. photosystem d. stroma

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?