Q: The main functions of epithelia are protection from the environment, coverage, secretion and excretion, absorption, and this? Choices: - absorption - accumulation - diffusion - filtration A:
filtration

(Question)
Q: Nuclear changes occur with a simultaneous release of what, and a slight drop in mass? Choices: - oil - mineral - hydrogen - energy A:
(Answer)
energy

Ques: Q: Momentum is directly related to both mass and? Choices: - mass - intensity - speed - velocity A:
Ans: velocity

(Q).
Q: What elements do water and hydrogen peroxide consist of? Choices: - carbon and oxygen - calcium and oxygen - hydrogen and helium - hydrogen and oxygen A:
(A).
hydrogen and oxygen

Ques:Q: Which type of double bond has a sigma bond and a pi bond? Choices: - dioxide - oxygen bond - Covalent Bonds - sodium - oxygen bond - carbon-oxygen bond A:

Ans:carbon-oxygen bond

Question: Q: When both momentum and kinetic energy are conserved in a closed system, the collision is called what? Choices: - a static collision - a spontaneous collision - an accidental collision - an elastic collision A:
Answer:
an elastic collision