Ques: Amirror is used for reflecting light, and light is reflected refracted or absorbed. Given these facts, what can't light do when hitting a mirror among the following options: - adding heat - refract or absorb. - It decreases - reflect - move to different locations - direct damage to the lungs - bounce light back - show a reflection
Ans: refract or absorb.

Ques: Cycles of freezing and thawing water cause ice wedging, and ice wedging is the most important form of mechanical weathering. Given these facts, what do cycles of freezing and thawing water cause among the following options: - Metling snow - Mechanical weathering - the looseness of soil - fissures of hot, acidic water - exposure to cold - Plant growth is reduced - heat production - looseness of dirt or compost
Ans: Mechanical weathering

Ques: Mollusks have a circulatory system with one or two hearts that pump blood, and clams, oysters and snails are familiar mollusks. Given these facts, have a circulatory system with one or two hearts among the following options: - Birds - alpacas - elms - Clams - salmon - animals - toads - complex
Ans: Clams

Ques: Microorganisms cause food to spoil, and irradiation kills microorganisms that spoil food. Given these facts, what can keep food from going bad among the following options: - irradiation - Cooking - Dehydration - sensory neurons - animal transport - Enzymes - nutrients - layers of fat
Ans:
irradiation