C. calcium is your answer
An organism is an animal with 5 levels of organization/
The answer is:
A) Cells are the basic unit of life.
Genetic variation is essential for natural selection because natural selection can only increase or decrease frequency of alleles that already exist in the population. Genetic variation is caused by: mutation. random mating between organisms
Answer:
Bulge
Telogen
Catagen
Explanation:
Stem cells (SCs) residing in the epidermis and hair follicle ensure the maintenance of adult skin homeostasis and hair regeneration, but they also participate in the repair of the epidermis after injuries.
Maybe a picture would help:
I hope this was helpful!