If using a bike saves energy, then riding a bike reduces what? Answer choices: - energy usage - Greenhouse gasses - acid rain - harmful substances - Greenhouse gases - temperature - prolactin release - storms
energy usage

(Question)
If deciduous trees have leaves that change color when summer fades, then during what time frame do deciduous trees' leaves change color? Answer choices: - summer end - dry and hot - summer start - barrel-shaped - dry conditions - winter - after winter - climate
(Answer)
summer end

Ques: If plant reproduction often requires bees, then what does plant reproduction often require? Answer choices: - DNA - global warming - energy - droughts - seeds - bees - food - legumes
Ans: bees

(Q).
If ethologists usually study how animals behave in their homes in an ecosystem, then ethologists usually study how animals do what in an ecosystem? Answer choices: - raising their temperature - retaining heat - reducing acid rain - protect plants - share properties - behave in their homes - storing water - Generating heat
(A).
behave in their homes

Ques:If perspiration is used for adjusting to hot temperatures by some animals, then what is used for adjusting to hot temperatures by some animals? Answer choices: - secretion - autoregulation - evaporation - hibernation - hormones - hydration - perspiration - Pituitary gland

Ans:perspiration

If the weight of an object causes the gravitational force exerted by that object, then what aspect of an bject causes the gravitational force exerted by that object? Answer choices: - atmosphere - kinetic - motion - two - barrel - shape - TRH - weight
weight