Why is it necessary for animals to have a circulatory system?
o to move blood
o to brea...
Biology, 15.11.2019 22:31 oliviajewelwilliams
Why is it necessary for animals to have a circulatory system?
o to move blood
o to breathe
o to maintain homeostasis
o to exchange materials with its environment
Answers: 1
Biology, 22.06.2019 12:30
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.
Answers: 1
Biology, 22.06.2019 19:00
Which of the following molecules could pass through the plasma membrane by simple diffusion? a. na+ ions b. glucose c. amino acids d. carbon dioxide
Answers: 1
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