Section one Answer thh question below 1.Species that have a high rate of reprodu

Question

Section one Answer thh question below

1.Species that have a high rate of reproduction and growth are classified as:

            a. K-adapted species        b. r-adapted species

2. An example of a niche in an ecosystem would be a:

            a. shark        b. whale        c. kelp         d. squid        e. predator

3.The Dead Zone in the Gulf of Mexico is an example of:

            a. ocean eutrophication    b. species interaction   c. natural selection

4. About 60% of the entire biomass on Earth are the ____________.

            a. humans beings   b. phytoplankton in the oceans   c. primary producers on land

5.Which of these cycles is most important for rapid plant growth?

            a. nitrogen      b. carbon      c. phosphorus      d. sulfur

6. The greenhouse effect is a:

            a. problem caused only by humans   b. naturally occurring phenomena

7. Carbon dioxide makes up ________ of the Earth’s atmosphere.

            a. 21%      b. 78%      c. 9%      d. 0.038%

8. El Nino (ENSO) phenomena is caused by:

            a. a rising of atmospheric pressure in the western Pacific

            b. greenhouse gases

            c. volcanic activity in the Pacific Rim

Explanation / Answer

1. r-adapted species. r-selected species have a high growth rate but low survivability. They require less parental care and have high reproduction rate.

2. Whales- niche is the role and position a species has in its environment.

3. ocean eutrophication- The dead zone is created due to reduction in oxygen levels. The increase in chemical nutrients in the water, leading to excessive blooms of algae that deplete underwater oxygen levels.

4. phytoplankton in the oceans.

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