Biology, 31.03.2021 06:30 farashka03
Sea otters are small marine mammals that prey on fish, clams, crabs, and sea urchins. Sea otters’ natural predators include bears, sharks, and killer whales, but humans have also threatened sea otter populations. Hunting of sea otters for their fur severely reduced sea otter populations in the 18th and 19th centuries. After laws and programs were put into place to protect sea otters, their populations started increasing. Some sea otter populations in Alaska are now decreasing again. Which of the following is the most likely cause of these decreases?
Answers: 2
Biology, 22.06.2019 08:30
Which best describes a benefit of using dna technology in medicine? a) medicine can be produced in mass quantities. b) medicine can be distributed at a reduced cost. c) medicines have fewer side effects. d) medicines are resistant to antibiotics.
Answers: 3
Biology, 22.06.2019 13:20
Aragonite shells of clams, snails, or scleractinian corals may be preserved unaltered in cenozoic deposits, but they are generally dissolved or recrystallized in older deposits. true or false
Answers: 1
Sea otters are small marine mammals that prey on fish, clams, crabs, and sea urchins. Sea otters’ na...
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