All living things use nitrogen to A) reproduce. B) make sugar. C) make proteins. D) transport water.

What is cellular respiration in the absence of oxygen called

A cell that contains enzymes, dna, ribosomes, a cell membrane, and chloroplasts could be a cell from

The bacteriologist Sir Alexander Fleming was engage in the study of staphyococcus a kind of bacteria that wa being grown in petri dishes. That's when he noticed the peniciin mold that was aso growing in some culture dishes.

Which example is an abiotic factor of an aquarium environment? 1. coral 2. water 3. sunfish 4. bacteria

What did Darwin notice about the different animals on the gala Pagosa islands

How does one determine when an ecosystem in in " balance"?

What are the 10 limitations of science

Which is one way that chemical weathering influences mechanical weathering? A. Winds scrape the rock layers away, exposing them to acids in the rain. B.

Which of these is an abiotic factor in a meadow A:Water B:Insects C:Birds D:Grass

Why were only purple flowers produced when breeding pure purple flower to pure white flower?