Q: What are the different feeding positions in a food chain or web called? Choices: - neural levels - Primary Level - convoluted levels - trophic levels A:
trophic levels

(Question)
Q: What do you call the energy that must be overcome in order for a chemical reaction to occur, or the minimum energy required to start a chemical reaction? Choices: - expression energy - phase energy - kinetic energy - activation energy A:
(Answer)
activation energy

Ques: Q: Photosynthesis produces oxygen as a byproduct, and respiration produces what as a byproduct? Choices: - carbon monoxide - nitrogen - ozone - carbon dioxide A:
Ans: carbon dioxide

(Q).
Q: What is the organic material that comes from plants and animals that were recently living called? Choices: - biofuels - contaminants - chlorophyll - biomass A:
(A).
biomass

Ques:Q: What is it in bone marrow transplants that may cause a graft versus host reaction? Choices: - tumors - neutrophils - cancer - lymphocytes A:

Ans:lymphocytes

Question: Q: What occurs over a large area when a rock is buried or compressed? Choices: - metamorphic diffusion - cavern system - landslide - regional metamorphism A:
Answer:
regional metamorphism