Question

We know though CO2 is toxic still it is required to be present in the atmosphere in certain amount. Why?​

Answer 1

Answer:

Carbon is in carbon dioxide, which is a greenhouse gas that works to trap heat close to Earth. It helps Earth hold the energy it receives from the Sun so it doesn't all escape back into space. If it weren't for carbon dioxide, Earth's ocean would be frozen solid.

Explanation:

that's why it is important ..

Answer 2

Answer:

an electronic machine that can store, find and arrange information, calculate amounts and control other machines