26 because you need to do 54-28=26
The atomic mass number is the number of protons AND neutrons together.
Answer: Gas. Gas vibrates and move freely at high speeds.
Explanation:
Answer:
Populations have genetic variation.
The environment changes.
Organisms must have specific traits in order to survive and reproduce.
Explanation:
Natural selection provides an advantage during an adverse condition for organisms that have a rich genetic variation in their population.
Also, environmental changes induced natural selection whereby organisms must adapt to changes around them.
For organisms to survive, they must have specific traits that gives them a competitive reproductive advantage.
The answer is 3.5 × 10^-3
