Fact 1: HIV infects and destroys helper T cells. Fact 2: If the antibodies to HIV are present, then the individual is said to be HIV positive. Given the two facts above, answer the question "What can infect and destroy helper T cells?" with the following options: - tissues - anemia - antibodies - cigarettes - flagella - Chemical energy - vipers - adding heat
antibodies

(Question)
Fact 1: Cycles of freezing and thawing water cause ice wedging. Fact 2: The processes of weathering, and water or ice wedging may assist in this. Given the two facts above, answer the question "What causes ice wedging?" with the following options: - Metling snow - Condensation - The sun - friction - Gravitational pull - mechanical - Weathering - Animals
(Answer)
Weathering

Ques: Fact 1: An animal requires energy to move. Fact 2: All foods provide energy. Given the two facts above, answer the question "What do animals require to move?" with the following options: - babies - food - warmth - air - oven - heat - oxygen - children
Ans: food

(Q).
Fact 1: Some parasites kill their host, but most do not. Fact 2: All parasites are harmful to their host, but some are beneficial to humans. Given the two facts above, answer the question "Some what are beneficial to humans?" with the following options: - fungi - parasites - roots - humans suffering - natural disasters - honeybees - poisons - orchids
(A).
parasites

Ques:Fact 1: Asandbar is formed by water moving sediment downstream. Fact 2: Bare sandbars are the ideal spots for new stands of cottonwood. Given the two facts above, answer the question "What is required for the ideal habitat for new stands of cottonwood?" with the following options: - sunlight - nutrients - warmth - Sediment - Black tar - Hot magma - trees - Chainsaws

Ans:Sediment

Ques: Fact 1: Eating something that contains pollutants has a negative impact on an organism 's survival. Fact 2: Smoking or pollution can and do cause cancer. Given the two facts above, answer the question "What can cancer have?" with the following options: - nucleus of a cell - a lot of human deaths - Short term wealth - decreased differentiation - Positive impact - death and devastation - Negative impact on survival - children
Ans:
Negative impact on survival