The process of accretion is the process of adding material (typically gaseous matter) to a tectonic plate or a landmass as a result of the gravitational forces.Most astronomical objects, such as galaxies, stars, and planets, are formed by the accretion processes<span>.
From the given options the following statement is true about the process of accretion:
A.</span><span>It enlarges continental landmasses and forms mountains along the edges of continents.</span>
Answer:
a. The embryo would suffocate or dehydrate.
Explanation:
Chorion is one of the four extraembryonic membranes that cover the embryo inside the egg. Chorion develops into the part of placenta-derived from the fetus.
Trophoblast develops into chorion during pre-embryonic development. Once formed, the chorion develops villi that are required for the exchange of material, specifically the respiratory gases, between the mother and fetus.
If an egg had nonfunctional chorion, the developing embryo will not get the supply of gases. In the absence of gas exchange between mother and embryo, the embryo will die of suffocation.
Chorion is also involved in the development of the placenta which in turn is the organ of the exchange of nutrients and gases and removal of toxic material.
Nonfunctional chorion would not support the placenta formation and the embryo will not get the supply of nutrients and water.
Desertification extends beyond the expansion of existing deserts to include land degradation due to human activity in drylands. Land degradation destroys or reduces the productivity of the soil, and is caused by excessive and unsustainable activities such as deforestation, overgrazing, poor land management, soil salinization, and soil erosion.
Sure hope this helps you :D
Some answers can be:
When there is no selective pressure
When there is low gene flow
When there is a bottleneck
