Mammals generate heat mainly by keeping their metabolic rate high, and humans use food to generate body heat. Given these facts, what keeps mammals' metabolic rates high among the following options: - gas - muscle - fur - sleep - water - Fe - food - ice
food

(Question)
An image in a mirror is formed by reflecting light, and reflection is the bouncing of light off of a reflective surface, such as a mirror. Given these facts, what causes an image to reflect among the following options: - the sun - fibers - erosion - a wave - Light - heat - photons - forces
(Answer)
Light

Ques: Population size influences the chances of a species surviving, and survival is to live, to live means hope. Given these facts, what does population size influence on a species among the following options: - Quality of life - their migration pattern - their home - characteristics - Plant reproduction - their chance of living - their food preference - metabolic reaction
Ans: their chance of living

(Q).
If an object reflects light toward the eye then that object can be seen, and light is made up of particles called photons. Given these facts, if an object reflects what toward the eye then that object can be seen among the following options: - observe it - sunlight - ultraviolet light - neutrons - Joules - photons - x-rays - positive
(A).
photons

Ques:Insect bites cause harm to living things, and pesticides kill insects and disease pathogens. Given these facts, living things can be protected by among the following options: - foolish behavior - exoskeleton - shells - Quasars - coral reefs - malnutrition - layers of fat - pesticides

Ans:pesticides

Question: Aplants require water for survival, and water hydrates the cells. Given these facts, plants require what for survival among the following options: - warm nights - Organic compounds - long winters - cool air - nutrients - sunlight - Energy. - cell hydration
Answer:
cell hydration