A, the endosymbiotic theory tells us that a looooong time ago, when there were only one-cell organisms, they kind of took in a bacteria. They profited from having a bacteria in it ( and I believe it is believed that this made it possible for organisms to have multiple cells, not sure) and these bacteria became mitonchondria/chloroplasts, thus answer A is the only one that doesn't support this theory.
Answer:
The correct answer would be "Adaptive radiation happens over a relatively short time".
Adaptive radiation refers to the process of evolution in which ancestor organisms diversify rapidly into a wide variety or new forms as a result of environmental changes, availability of new resources, availability of new niches, or new challenges.
Accumulation of adaptive radiations over a long period of time results in speciation.
For example, Darwin's finches adapted according to their feeding behavior.
This happens because taproot formation is impossible, so trees developed shallow root beds.
Permafrost is soil that has a temperature below 0 °C (for about two years) and forms a solid matrix which can extend to a depth of hundreds of meters. Because of this structure the permafrost prevents trees from developing deep root systems. As a consequence, the shallow root bed of trees such as black spruce, causes them to lean or even fall.
Answer:
A property of cells, tissues, and organisms that allows the maintenance and regulation of the stability and constancy needed to function properly. Homeostasis is a healthy state that is maintained by the constant adjustment of biochemical and physiological pathways.
Explanation:
Answer:
I believe your answer is fertilization.