Q: What causes nitrate to go back to its gaseous nitrogen state? Choices: - phytoflagellate bacteria - decomposers - enzymes - denitrifying bacteria A:
denitrifying bacteria

Q: What has the smallest, lightest atoms of all the elements and is colorless, odorless, tasteless and nontoxic, but highly flammable in its pure state? Choices: - helium - magnesium - barium - hydrogen A:
hydrogen

Q: Q: Muscle atrophy due to age is called what? Choices: - nymphomania - Increased Atrophy - pepinia - sarcopenia A:
A: sarcopenia

Question: Q: A current in a circuit needs a complete what? Choices: - cause - speed - stream - path A:
Answer: path

*Question*
Q: Plant-like protists are called what? Choices: - bacterium - sponge - yeasts - algae A:
**Answer**
algae

*Question*
Q: What charge do atoms carry? Choices: - negative - static - positive - neutral A:
**Answer**
neutral