Question

1.
Suppose all birds, insects and mammals disappear from the Earth. How would this
affect the plants that are pollinated by animals?
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Answer 1

If all  birds, insects and mammals disappear from the Earth, then  the plants that are pollinated by animals will not be able to reproduce.

Explanation:

• Many flowering plants use animals as the means for pollination.

• Some animals drop off the seed of plants in their feces after consuming the fruit.

• Some insects transfer pollen from one plant to another while they are collecting nectar or they simple get attracted to the plants.

• If the birds, insects and mammals disappeared from the Earth then pollination or transportation of seeds would be less likely to occur in such plants and hence they would not be able to reproduce.

Answer 2

Answer:

Farmers would no longer need to use harsh pesticides to protect against insects. Sometimes the wind and animals are able to assist with pollination, but the majority is done by insects. Without these pollinators, most plant life on Earth would disappear.

Explanation:

A common reaction when people see a bug is, “Eww… gross,” or “Kill it with fire!” But have you ever thought about how important these little creatures are to the Earth, and the survival of the human race?

As it turns out, humans would be in big trouble if insects disappeared. Within 50 years, all life on Earth would end.

"If insects were to disappear, the world would fall apart — there's no two ways about it," said Goggy Davidowitz, a professor in the departments of entomology and ecology and evolutionary biology at the University of Arizona, in conversation with Live Science.Yes, there would no longer be those pesky mosquito bites, no flies constantly buzzing around your head, no wasp stings, and no more insect-spread diseases such as malaria, west nile, or dengue fever — which kill hundreds of thousands of people every year. Farmers would no longer need to use harsh pesticides to protect against insects. According to the United States Department of Agriculture, more than 500 million pounds of chemicals are used annually to fight against bug infestations.

That sounds pretty good right? Too bad most of us wouldn’t be able to reap the benefits most of us would starve to death. Approximately 80 percent of all Earth plants are angiosperms, or flowering plants, that require pollination from either bees, butterflies or other pollinating insects. Sometimes the wind and animals are able to assist with pollination, but the majority is done by insects. Without these pollinators, most plant life on Earth would disappear.