Which of these is an environmental effect of burning fossil fuels and pesticides from farming?

a. smog

b. poisoning wildlife

c. increased temperature

d. increased number of habitats

Where do the respiratory and circulatory systems meet? a. in the heart b. in the muscles c. in the lungs d. in the brain

_is a product of the first stage of photosynthesis.atpglucosecarbon dioxidewater

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.