7. which land biome has the greatest diversity of plant species, and which has the least? a. grassland: most; tundra: least b. rain forest: most; taiga: least c. rain forest: most; tundra: least d. temperate forest: most; taiga: least

The correct answer is c.rain forest: most; tundra: least.

Explanation:

Rain forest is the forest that gets heavy and continuous rainfall due to which it supports a large diversity of plant species and animal species. It can be divided into tropical rain forest or temperate rain forest.

Rain forests of the world have nearly 50% of total plant species even after it spans only about 2% of the earth's surface.

Tundra biome is the coldest biome in our earth where big trees are nearly absent due to the hindered growth by low temperature although small vegetations are found in the tundra region.

So the correct answer is c.rain forest: most; tundra: least.

humans are now responsible for causing changes in the environment that hurt animals and plant species. we take up more space on earth for our homes and cities. we pollute habitats. human activity often changes or destroys the habitats that plants and animals need to survive.

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