<span>All plant and animal groups existing together and the physical factors with which they interact compose an ecosystem.
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Answer:
Breathing is the exchange of oxygen and carbon dioxide between an organism and it’s environment.
Explanation:
Basically, breathing is the inhalation and exhalation of gases between organisms and environment. Animals inhaled oxygen gas and exhaled carbondioxide gas while plants inhaled carbondioxide and exhaled oxygen gas. Animals use oxygen in the process of respiration for releasing energy while plants take carbondioxide for the production of glucose in the process of photosynthesis.
The offspring copies 50% from the mother and 50% from the father genes mostly. But along the process of cell cycle their are changes will undergone and the percentage will vary.
The correct answer is C. A decrease in the population of sea ducks
Explanation:
Food webs are diagrams that represent the relationship of organisms in an ecosystem by showing feeding or predatory relationships. This means food webs show which organisms eats another organism. In the case of the food web presented, this shows bald eagles fed on sea ducks and large piscivorous fish, this implies for survival bald eagles need from these two organisms. In this context, a decrease in the population of sea ducks (option C) would cause a decrease in the population of eagles because fewer sea ducks imply less food for eagles, and therefore fewer resources to survive.
Answer: The extinction of dinosaurs will lead to increase in the prey which they used to consume before extinction.
Explanation:
Many years ago the dinosaurs used to dominate on earth as large mammals. They were plant eater herbivores and animal consumer carnivores. After the extinction of dinosaurs the ecological balance got disturbed. Flowering plants dominated the earth. The large and massive non-bird dinosaurs died but the bird like dinosaurs survived and they passed their traits to some lineages of modern birds.
