Answer:
B. An egg cell and a sperm cell unite.
Explanation:
Answer:
The study of oceans and their life.
Explanation:
The study of oceans, including seawater, the ocean floor, and marine plants and animals.
Answer:
Environmental awareness is an incredibly important part of our lives. In order to protect the sustainability of the planet, everyone needs to commit to becoming more environmentally aware. Environmental degradation is detrimental and is jeopardising the long-term health and security of animals, plants and humans.
:)
An embryonic stem cell is the first cell in the embryo, this is what creates a human and helps more cells to form.
Answer:
Option (A) and (D).
Explanation:
Esophagus may be defined the long tube like structure that connect the throat with the stomach. The partially digested food from the buccal cavity to the stomach is pass down through the esophagus.
The mucosa of the esophagus contains the thick layer of the nonkeratinized squamnous epithelium. The smooth muscles are present in some layers only. The two layer of the muscle that are superior to the one third of the muscularis are the skeletal muscle.
Thus, the correct answer is option (A) and (D).