Ques:Q: What year did the soho spacecraft first started to operate? Choices: - 2012 - 2006 - 1987 - 1996 A:

Ans:1996
-----
Ques:Q: What feature of the land do contour lines show? Choices: - trails - flat surfaces - bodies of water - three-dimensional shape A:

Ans:three-dimensional shape
-----
Ques:Q: Peroxisomes perform a couple of different functions, including lipid metabolism and chemical detoxification. in contrast to the digestive enzymes found in lysosomes, the enzymes within peroxisomes serve to transfer hydrogen atoms from various molecules to oxygen, producing what? Choices: - calcium - water - hydrogen - hydrogen peroxide A:

Ans:hydrogen peroxide
-----
Ques:Q: What is the energy needed to start a reaction between catalysts and reactants called? Choices: - reaction energy - decomposition energy - conductivity energy - activation energy A:

Ans:
activation energy
-----