Answer:
Mass extinctions have occurred throughout the planet's history and in many of them primate species also have been extinct. Climate change was the cause of some of these extinctions. For instance, between the end of the Eocene and the beginning of the Oligocene global climate became drastically colder and drier, resulting in a decrease in the food supply and in the consequent extinction of several species of adapid and omohyoid primates from America, South Europe and Asia. Extinctions due to climate change can be triggered by both catastrophic global events and the planet's natural climate dynamics.
Non-climate related environmental events also occurred throughout the evolutionary process, affecting primate populations and species and eventually causing their extinction. Changes in geographic space can lead to interaction between different species and populations and consequently competition for resources, excessive predation or pathogen transmission (a phenomenon called “Background extinction”), and all these factors also contributed to the disappearance of some primate species. This type of extinction includes those most recently caused by human action.
Answer:
D. Chemical - mechanical - thermal
Explanation:
D because the food is chemical and the mechanical is the human excersice, and it results in thermal
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Consider two bodies A & B which collide with each other. If 
be the force exerted by the body A on Body B. Then Body B will also exert force 
on Body A which is equal in magnitude but opposite in direction.
The force exerted by Body A on Body B is called Action, and the force exerted by the Body B on Body A is called Reaction.
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Puppies and kittens generally receive the coccidian protozoa from their mothers.
Explanation:
Coccidia are parasites that dwell in the intestinal walls of the host’s body, like the dogs and cats. It causes coccidiasis which is an intestinal tract infection.
Kittens and puppies can easily get infected with coccidia through transmission by direct or indirect contact with their infected mothers. They can also be infected when they contact feces of infected dog or cat and from contaminated soil or food.
Most of the symptoms related to improper digestion like vomiting, diarrhea can occur.
