D is the answer to 3 | C is the answer to 4
Answer:
Clumped
Explanation:
Beaver with the Botanical name Castor canadensis is a species that affects
the structure of an habitat and its dynamics this is done by the diverting of streams, and the felling of trees and other woody vegetation.
They usually live in colonies i.e clumped together in a particular area not individually and a colony can support 2–14 beavers that are related and on the average Six Beavers.
They are about 35–40 inches long and
Weighs 30–60 pounds. The average lifespan of a beaver is 5 years and are active both in the morning and at night.
Answer:
The beak, bill, and/or rostrum is an external anatomical structure of birds that is used for eating and for preening, manipulating objects, killing prey, fighting, probing for food, courtship and feeding young. The terms beak and rostrum are also used to refer to a similar mouth part in some ornithischians, pterosaurs, turtles, cetaceans, dicynodonts, anuran tadpoles, monotremes (i.e. echidnas and platypuses, which have a beak-like structure), sirens, pufferfish, billfishes and cephalopods.
Explanation:
Competition help to regulate population growth since only those who are able to obtain food survive.
Crop plants and weeds may compete for water and for sunlight.
Farmers spray herbicides early in the growing season to avoid competition between crop plants and weeds.
<h3>What is the effect of competition on population?</h3>
Competition among species help to regulate population growth by ensuring that only those who are able to obtain food survive. Thus, only fit individuals of a species survive.
Crop plants and weeds may compete for water because water enables them to carry out metabolic activities of growth and development.
Crop plants and weeds may also compete for sunlight and they need sunlight to carry out photosynthesis.
Farmers spray herbicides early in the growing season in order to avoid or reduce competition between crop plants and weeds.
In conclusion, competition among species helps to control overpopulation.
Learn more about competition among species at: brainly.com/question/9428741
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