How does nitrogen enter the food chain?

Algae use sunlight to make sugars

What the difference between reduction and decrease?

What is Chromatid? what is genome?

What do scientists know about extrasolar planets? There are very few that are habitable. There are several that have liquid water on them. They don't exist. There are likely billions of them in the galaxy.

In humans how many chromosomes are in a cell

A condition called an aneurysm occurs when a

Which one of the following molecules is a by-product of cellular respiration? a. Glucose b. Oxygen c. Pyruvate d. Water

What substances, present in fruits and vegetables, provide significant health benefits such as reducing the risk of cancer?

Which structures are common to both prokaryotic and eukaryotic cells? check all that apply. vacuole cell membrane golgi body ribosome cytoplasm endoplasmic reticulum?

What important feature (s) of noncovalent bonds makes them so important to life?