B,
predators can help limit prey populations? i’m not sure on that one.
parasites don’t want to kill their host because it relies on its host’s body and body functions. such as a tick on a dog.
i really hope this helps a little
While this is happening, the trophoblast is secreting proteolytic enzymes to burrow into the endometrium. Trophoblast are the peripheral cells of the blastocyst, which normally attach the fertilized egg to the uterine wall thus contributes to the placenta and the membranes that nourish and protect the developing zygote.
Answer:
A blastocyst is made up of an inner group of cells with an outer shell. The inner group of cells will become the embryo. The embryo is what will develop into your baby. The outer group of cells will become structures, called membranes, which nourish and protect the embryo
A synonym for observation could be remark.
Light intensity, CO2 concentration and temperature can all limit rate of photosynthesis.
For example, if there is lots of CO2 and light but very low temperatures then temperature would be the limiting factor. However, at room temperature on a bright day, CO2 can be the limiting factor instead. So you can see how it depends on the situation.
