The double membrane. It's theorized that chloroplasts used to be their own single-celled organism in the environment (and therefore with its own membrane). Then, the theory states, a larger cell took in the chloroplast by endocytosis, which involves surrounding the chloroplast in the large cell's own membrane. The chloroplast would then have two membranes surrounding it. This is similar to the thinking for mitochondria becoming an organelle as well. Hope this helps! :)
Hyaline cartilage in between
Answer:
Trophic cascade is defined as an ecological phenomenon triggered by the addition or removal of top predators and involving reciprocal changes in a relative population of predators and prey through food chain, which often results in dramatic changes in the ecosystem structure and nutrients cycling.
Explanation:
An example was the removal of wolves in Eastern North America which was associated with an increase in white tailed deer and a decline in plants eaten by the deer.
Waves transmit energy, not water, and are commonly caused by the wind as it blows across the ocean, lakes, and rivers. Waves caused by the gravitational pull of the moon and the sun are called tides.
Hello there
the answer is the ability of the heart to pump efficiently drops during such angry periods
Hope this helped
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