Q: What kind of reaction is a reaction in which two or more substances combine to form a single new substance? Choices: - power reaction - compounding reaction - chemical reaction - combination reaction A:
combination reaction

(Question)
Q: How do invertebrates reproduce? Choices: - randomly - constantly - asexually - sexually A:
(Answer)
sexually

Ques: Q: The nervous system is made up of these? Choices: - fibers - blood cells - muscles - neurons A:
Ans: neurons

(Q).
Q: When female mammalian embryos consist of just a few thousand cells, one x chromosome in each cell inactivates by condensing into a structure called what? Choices: - lewy's body - morton body - baker body - barr body A:
(A).
barr body

Ques:Q: What is the first step of the calvin cycle called? Choices: - dioxide fixation - carbon maturation - breath fixation - carbon fixation A:

Ans:carbon fixation

Q: What characteristic of birds is related to the food they eat? Choices: - feathers - tail - feet - beak A:
beak