<span>The nucleus is located at the center of an atom. It's very dense - almost all of the mass of an atom is located in the nucleus - and is made up of protons and neutrons. </span>
Answer:
a mutation that causes female pigs to have less offspring
Explanation:
Answer:
The lens
It helps to focus on objects and light
Answer:
A. Student A because it requires a hypothesis
Answer:
Earth, Mars
Explanation:
Earth is the only planet on which life is known to exist. Water on earth exists in all three forms
Presence of water on Mars was recently confirmed. Though liquid water is no more present, in solid form, water is present in polar ice caps.
