Fertilization is the impregnation, the state when<span> a sperm cell penetrates the egg cell and the genetic material of both cells combines.
A few days after fertilization i</span><span>mplantation happens. Implantation is the attachment of the fertilized egg to the uterus, happens on average about 9 days after ovulation/fertilization (between 6 and 12 days) and is required for the fetus to continue to grow.</span>
Answer:
A food web consists of all the food chains in a single ecosystem. ... Consumers can be carnivores
Explanation:
Answer:
Humans have a variety of effects on the physical environment, including overcrowding, pollution, the use of fossil fuels, and deforestation. Climate change, soil erosion, poor air quality, and undrinkable water have all been driven by such changes.
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Answer:
(d) Molecules to areas of higher concentrations
Explanation:
The use of ATP to transport substances from a low concentration region to a high concentration region is called active transport because its against the concentration gradient.
And because it uses chemical energy from ATP is called active primary transport.