The carbon that plants need for photosynthesis comes from ... A. carbon molecules dissolved in water. B. carbon dioxide gas in the atmosphere. C. carbon molecules that the plant produces.

Why is it difficult to know the impacts of deep sea mining? A. It has never been tried successfully, so we don't know exactly how it can be done. B.

Why do you suppose the numbers of the fd& c approved food dyes are not consecutive would you expect stain removers to be an acidic or basic solutioin?

Which of the following describes empirical evidence? A dogs are good pets B dogs can speak English C dogs have two eyes and two ears D pet dogs should be allowed at school prom

Unlike DNA, RNA A. has deoxyribose as the sugar within its nucleotide components. B. contains two strands wrapped in a helix. C. contains nitrogenous bases. D. pairs uracil with adenosine instead of thymine.

Outline the three steps your body's immune system takes to fight off an infection

If you looked at heart cells, would you expect to see a lot of mitochondria or only a few? Why?

Which of the below is TRUE regarding desertification? a. It is likely to happen in any type of climate b. It produces rich desert ecosystems c. It is not usually impacted by droughts or climate change d.

What is considered a pre existing medical condition?

Humans do not eat the algae directly from the ocean, so how can we still be affected by it?

In an effort to control the ongoing cholera epidemic affecting Haiti, health officials are considering the use of cholera vaccines. One difficulty they are facing is the limited vaccine supply.