Answer:
<h2>Letter A</h2>
Explanation:
Respiration means to breathe and we breath oxygen and without it we will die.
An epoch is longer than an era.
Answer:
Yes, if both parents are heterozygous for the trait.
Explanation:
For example, they may recognize that a plant with white flowers crossed with itself or another plant with white flowers will produce only white flowered plants, while a purple-flowered plant crossed with itself or another purple-flowered plant sometimes produces white-flowered offspring.
Scientists understood that species share a common ancestor.
