Riding a bike does not cause pollution, and carbon monoxide is, of course, an air pollutant. Given these facts, what doesn't riding a bike cause among the following options: - Allergies - harmful substances - Decrease bodily water - Greenhouse gasses - carbon monoxide - global warming - Dehydration - chemical changes
carbon monoxide

(Question)
Acavern is formed by carbonic acid in groundwater seeping through rock and dissolving limestone, and carbon dioxide dissolved in rainwater forms carbonic acid. Given these facts, what chemical creates a cavern among the following options: - carbonic acid - heating liquids - hydrogen and oxygen - aqueous solution - salt - oxygen - hydrogen - flow of electrons
(Answer)
carbonic acid

Ques: Most invertebrates have a nervous system, and narcotic analgesics act on the central nervous system to relieve pain. Given these facts, how do most analgesics work on invertebrates among the following options: - insects - kinetic - adding heat - reduce - decrease stamina - it needs them - Relieve pain - protect them
Ans: Relieve pain

(Q).
If the amount of available food and water decreases in an environment then animals may leave that environment to find food and water, and many areas are mostly affected by the persistent drought in the shortage of food and water. Given these facts, persistent drought and food shortages can cause animals to leave what among the following options: - their hosts - that owner - that shelter - circulatory systems - dormant state - that environment - that ecology - Localized damage
(A).
that environment

Ques:If an object in a fluid is more dense than that fluid then that object will sink in that fluid because of gravity, and oil is less dense than water. Given these facts, why does water sink in oil among the following options: - gravity - flooding - salinity - sun's heat - explosion - water vapor - combustion - erosion

Ans:gravity

The movement of tectonic plates causes volcanic eruptions, and among the most destructive types of debris flows are those that accompany volcanic eruptions. Given these facts, the movement of tectonic plates causes what among the following options: - friction - erosion - to move people - climate - debris flows - flooding - Movement - global warming
debris flows