Exercise increases a body 's strength, and strength training is also effective for increasing bone strength in older adults. Given these facts, a good way for older adults to strengthen bones is to among the following options: - Through play - drive more slowly - exercise - use a hearing aid - quadriceps - donate bone marrow - sweating - movement
exercise

(Question)
Asolar panel converts sunlight into electricity, and electricity Cars that operate using electricity are the cleanest cars on the market. Given these facts, some cars can now be powered by among the following options: - wind - Solar energy - fusion power plants - brain waves - gravitational waves - engines - sunlight - energy
(Answer)
sunlight

Ques: Fog is formed by water vapor condensing in the air, and fog When driving, fog is an obstacle or a hindrance that makes things obscure. Given these facts, what can be water vapor condensing in air be a hindrance to among the following options: - eating - driving - survival - rain - movement - farming - vehicles - cooking
Ans: driving

(Q).
Conserving water can be used for survival in a dry environment, and deserts are usually very, very dry. Given these facts, what can be used for survival in the desert among the following options: - nutrients - shade - food and shelter - salt and water. - heat - picnics - Conserving water - Chemical energy
(A).
Conserving water

Ques:Using a gasoline engine requires burning gasoline, and gasoline is used in cars, boats, motorcycles, lawn mowers and other engines. Given these facts, what does using a car require among the following options: - Burning gasoline - Burning wood - Electrical energy - a hydraulic system - Driving a boat - Burning tires - Time and energy - hydrogen and oxygen

Ans:Burning gasoline

Question: Sex hormones are chemical messengers that control sexual development and reproduction, and estrogens are female sex hormones. Given these facts, which chemical controls sexual development and reproduction in females among the following options: - acetic acid - Hemoglobin - Fructose - barnacles - animals - Estrogen - Pesticides - Baby spray
Answer:
Estrogen