D
Because most air pollution is caused by the burning of fossil fuels burned in the home
The four major types of germs are bacteria, viruses, fungi, and protozoa. They can invade plants, animals, and people, and sometimes they can make us sick.
Long chains of amino acids used for building, repair, and maintenance.
Take one gene at a time
B.ABC
A. abc
Explanation:
1. Earth is 13 million years older than moon... Moon is 4.53 billion years ago and earth is 4.543 billion years ago.
Much younger than earth.
2.moon has small iron core or lacks sizable iron core.
3 galaxies not considered in solar system bcoz
solar system is the part of milky way galaxy..
4. Hydrogen and helium
5. Venus bcoz it is closest to Sun.
