What is the process by which bacteria convert nitrogen gas in the air to ammonia and nitrates which can then be used by plants?

Christie's doctor recommends that she eat 40 grams of protein a day. She's already consumed 50% of her protein recommendation for the day. How many servings of the given snack should Christie have to meet her daily protein recommendation?

Which is the best example you of a direct observation

What is the name for a reaction that links monomers to form a chain? a-hydrolysis b-dehydration synthesis c-cellular respiration d-photosynthesis

How does the abnormal shape of a sickled red blood cell affect its movement through blood vessels?

What is bacterial transformation

With severe deep frostbite of an extremity, the water should be at what temperature for re-warming

What flowering plants evolved during the Cretaceous period

Most jobs moved from the home to the factory and led to

Day and night are caused by Earth's revolution on its axis.

If one species in a community dies out or moves, the community will