Answer:
5789.07
Explanation:
True or False vacuoles direct cell activities by sending instructions to different parts of an animal cell
Answer:
False
Explanation:
The nucleus controls the cells activities
Isotopes are atoms of the same element that have different O principal chemical properties, masses. O numbers of protons, O numbers of electrons.
Answer:
Different atomic mass, number of neutrons
Explanation:
Isotopes refer to atoms of the same element, with same atomic number, number of protons & electrons. However, they have different atomic mass, because of different number of neutrons.
What is a unwanted change in the environment caused by substances or from of energy??
Answer:
pollution I think
Explanation: