Answer:
Due to strong immune system and dormant state.
Explanation:
If a person who looks well could still be a source of infecting microorganisms because the microorganisms present in its body not affected him due to powerful immune system but it can cause infection in the body of those person who have weak immune system. The other reason is that microorganisms are present in dormant state due to unavailability of good growing condition but when they got good conditions they became active and causes infection.
Answer:
Explanation:
The common characters shared by frogs and pigeons are:
presence of jaws
four limbs
The frogs and pigeons share these characteristics because they both are derived or evolved from a common ancestor.
During the course of evolution, the jaws are evolved in beaks in birds or pigeon as beak is light-weight in comparison to jaws.
Similarly, the forelimbs get covered with feathers to become wings.
B.Sunrise
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Answer:
The correct answer is - 1, 2, 3, 4, 5.
Explanation:
An ecosystem is an isolated geographical area that carries living organisms, abiotic factors, soil, weather, and landscape that work in harmony. The ecosystem includes both living and nonliving factors and these factors affect one another and another system present in the system.
Unlike energy here matter is recycled and reused in the ecosystem that is carried by various nutrient cycles. An ecosystem can support more than one population.
