Question

question 31 (1 point) biodiversity is best defined as: a the number of plants in a forest b the variety of life measured by the number of species and their relative proportions in an area c the total population of humans on earth d the amount of rainfall and temperature averages in an ecosystem question 32 (1 point) which of the following is an ecosystem service provided by biodiversity? a blocking sunlight b raising ocean temperatures c increasing soil pollution d purifying water question 33 (1 point) what role do bees, flies, and butterflies play in maintaining biodiversity? a pollinating plants b storing carbon as rocks c breaking down fossil fuels d producing clean water

Explanation:

• Question 31: Biodiversity encompasses the variety of life, measured by species - number and relative proportions. Option a is too narrow, option c is about human population not biodiversity, and option d is about climate - related factors not life variety.
• Question 32: Biodiversity helps in purifying water through natural processes like filtration by plants and soil organisms. Blocking sunlight, raising ocean temperatures, and increasing soil pollution are not positive ecosystem services provided by biodiversity.
• Question 33: Bees, flies, and butterflies are important pollinators. They transfer pollen from one plant to another, facilitating plant reproduction and maintaining plant diversity which in turn supports overall biodiversity. Storing carbon as rocks, breaking down fossil fuels, and producing clean water are not their main roles in maintaining biodiversity.

Answer:

Question 31: B. The variety of life measured by the number of species and their relative proportions in an area
Question 32: D. Purifying water
Question 33: A. Pollinating plants