microparasite 1. A population of birds that had gone extinct on an island was re

Question

microparasite

1. A population of birds that had gone extinct on an island was reintroduced to that island. The generation time of these birds is 1 year. 20 birds were introduced to the island in 2010. In the first year after the population was reintroduced, r was 0.1. How many birds will be on the island in 2100? Between 1,000 and 10,000 birds It is not possible to predict, as r is unlikely to remain constant over such a long time interval. Between 100 and 1,000 birds Between 10,000 and 100,000 birds At least 1,000,000 birds

Explanation / Answer

2. The answer is: parasitism; commensalism

Ticks feed on the blood of mice and other mammals. In 2012, ecologists studied the interaction between ticks and the white-footed mice in an oak forest. They found that when tick density is high, fitness of white-footed mice declined; they would characterize the interaction between ticks and mice as parasitism. In 2013, tick density was low and the researchers found no effect on mouse fitness; they would characterize the species interaction between ticks and mice as commensalism.

in 2012, ticks were parasites of white foote mice.

In 2013, Mouse and ticks share a relationship of commensalism as mouse were not affected even when ticks inhabbited their them.

3. The answer is: microparasite

Ebola virus is a strict parasite so it will multiply only when it is inside the host.

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