Q: How can viruses make copies of themselves?
Options:
- (A) A compound that donates proton
- (B) attach themselves to cells
- (C) have sex with another virus
- (D) distances themselves from cell
- (E) attach themselves to viruses
- (F) it needs them
- (G) rapid expansion
- (H) By wind and rain
A: So, my chain of thought: Viruses cannot reproduce by themselves. Viruses attach themselves to cells and reproduce. Viruses cannot make copies of themselves alone. They need to attach themselves to cells. The answer is (B).

Q: What can a mammal produce by shivering?
Options:
- (A) energy
- (B) motion
- (C) food
- (D) warmth
- (E) cells
- (F) fur
- (G) light
- (H) matter
A: So, my chain of thought: Mammals can also generate little bursts of heat by shivering. Basically, heat is energy. Mammals can generate little bursts of energy by shivering. The answer is (A).

Q: What is still provided, whether the style is long or a mullet?
Options:
- (A) braids
- (B) it helps plants in growing
- (C) characteristics
- (D) insulation and protection
- (E) bowl cut
- (F) buzz cut
- (G) Mechanical energy
- (H) food and shelter
A:
So, my chain of thought: Hair helps to insulate and protect the body. Frankly, long hair is quite different to a mullet style. Whether worn long or as a mullet, there is still insulation and protection provided. The answer is (D).