I am going to assume you meant the "first trophic level" of the ecosystem. The first tropic level of an ecosystem is made up of producers, so the answer is C, Acorns.
Answer:
Mitosis produces all animal and plant cells, tissues, and organs excepts for the gametes ( the eggs and sperm). Since mitosis produces genetic clones of the parent cell when it divides, all animal and plant cells that grow from a fertilized egg (zygote) are more or less genetically identical.
Explanation:
Science
The hormone that stimulates ovaries to release one egg per ovarian cycle is called follicle-stimulating hormone (FSH). This hormone is produced in the pituitary gland. Most woman will reach puberty by their teen years.
A) enzymes
<span>Enzymes are catalysts which aid in speeding up chemical reactions (for example, breaking down hydrogen peroxide into water and oxygen). </span>
