Without genetic variation, a population cannot evolve in response to changing environmental variables and, as a result, may face an increased risk of extinction. For example, if a population is exposed to a new disease, selection will act on genes for resistance to the disease if they exist in the population.
Answer:
The other populations will decrease.
Explanation:
If the grass population decreases, then the grasshoper population will decreace, causing the mice population to decrease, which will lead to the decrease in owl population.
Answer: The water in the earth is older than earth itself.The water inside earth came out as steam from volcanic vents and the clouds rained down water..Comets also contain lot of water ice.Early period of solar system large amount of comets and asteroids hit the earth They also brought lot of water.
Explanation:
Answer: living things
- adapt to environment
-grow and develop
-reproduce
-use energy
-have DNA or RNA
-have senses and respond to change
-have cells
-respiration
Explanation:
hope this helps :)
The fossil record provides evidence of Earth’s changes over time. It's a record keeper of the Earth'd changes over time.
