Q: What are the smallest type of blood vessel? Choices: - varicose veins - spider veins - arteries - capillaries A:
capillaries

(Question)
Q: How many pairs of legs do arachnids have? Choices: - 8 - 6 - ten - 4 A:
(Answer)
4

Ques: Q: What celestial body is the earth's main source of energy? Choices: - rivers - ocean - moon - sun A:
Ans: sun

(Q).
Q: Induced mutations are caused by environmental factors. what term is used to describe a mutation that has no environmental cause? Choices: - cancerous mutation - evident mutation - numerous mutation - spontaneous mutation A:
(A).
spontaneous mutation

Ques:Q: The attractive force between water molecules is what kind of reaction? Choices: - symmetrical reaction - aquatic reaction - diffusion reaction - dipole reaction A:

Ans:dipole reaction

Q: What man-made substance tends to break down ozone in the stratosphere? Choices: - gasoline - steel - plastic - cfcs A:
cfcs