Some living thing's bodies are weaker than others. For the species to live, the strong ones of the species will not get sick, reproduce and create strong offspring. The weak will die out.
The two major surfaces of the moon are the maria and the highlands. The maria would be younger, since it has less craters than the highlands.
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Obeying the laws of homeostasis, it would slow or stop (in this case due to such a high concentration it would most likely stop)
Answer:
B. Surgery
Explanation:
I am not entirely sure but based on the definition of selection pressure (which talks about how external agents affect the survival of an organism) surgery is does not meet the definition.
A tiger hunting a prey affects the survival of prey. Beginning of ice age is an environmental agent that can affect survival of organism that cant tolerate cold. Antibiotics are drugs that can kill bacteria thus lower their survival. Surgery can actually increase survival if some form of disease is being treated.
Answer:
Gymnosperms are seed plants that have evolved cones to carry their ... Megaspores made in cones develop into the female gametophytes inside the ovules of ... ovule: the structure in a plant that develops into a seed after fertilization; the ... grain to initiate fertilization; the pollen grain divides into two sperm cells by mitosis; ...
Explanation: