Biology, 18.10.2019 06:10, brooklyn4932
During the 19th century, sea otters were hunted almost to the point of extinction. when the number of sea otters became very low, the ecosystem of kelp bed "forests" also declined. scientists discovered that the sea otters were predators of sea urchins, which were, in turn, predators of the kelp. when sea otters declined, the sea urchin populations grew, destroying the kelp ecosystem and the many species that depended on it. it was then understood that sea otters were in this ecosystem.
a. predators
b. competitors
c. parasites
d. a keystone species
e. producers
Answers: 3
Biology, 22.06.2019 08:10, xojade
Ascience research group is testing a new type of plant food. one trial is conducted in a controlled experiment. the data from the trial show that the plant that received the new food grew faster than the control plant. the group announces that the new plant food makes plants grow faster. what is the main weakness in this scientific claim?
Answers: 2
Biology, 22.06.2019 13:50, srosrguezbracho
18. how do the cells in meiosis differ from the cells in mitosis?
Answers: 2
During the 19th century, sea otters were hunted almost to the point of extinction. when the number o...
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