Ahuman activity that could significantly decrease the amount of carbon dioxide in the air is

We can help in MANY different ways, such as: Drive less,
Stop using air conditioning or electrical appliances,
Eat local produce so they are not transported,
and use less heat in your home.

A) 4 amusingb)alpha particle is a helium nucleus. it contains 2 protons and 2 neutrons.c)alpha particle has charge of +2.

Bhope this : )