Which of the following is a consequence of water polluted by human sewage?

a. pathogens

b. disease vectors

c. high levels of contaminants

d. all of the above

Explain why being small is an advantage to a cell

How is light energy converted into chemical energy during photosinthesis?

What is the purpose of the cell organelles?

Genetics and heredity test

What is the purpose of an election carrier

Why might it be particularly beneficial for the giant spider crab to be so large?

In which stage of growth do plants rest or grow very little?

Scientists have debated the evolution of three life forms: reptiles, birds and dinosaurs. After many years of reviewing fossil records scientists proposed the evolutionary relationship seen above in the cladogram.

The PNS is divided into several subsystems. What two subsystems form the first major division of the PNS? sensory and motor somatic and autonomic parasympathetic and sympathetic CNS and brain

Consider the model of the food chain. Imagine there is a herbicide poison spill and all the grass is killed. How will this influence the food chain model? A) The grasshoppers will die out. B) All of the consumers will decrease.