Answer:
The stomach and intestines have a thin simple columnar epithelial layer for secretion and absorption. The submucosa is a thick layer of loose connective tissue that surrounds the mucosa. This layer also contains blood vessels, lymphatic vessels, and nerves.
Explanation:
It could be active transport or passive transport
Answer: Tissue
Explanation:
Tissue is a group of similar cells that work together to serve a common function. Tissues that work together are grouped and called organs which futher makes up a system. The digestive system for instance is made of different organs such as intestine, stomach which works together to digest food.
Each digestive organ in the digestive system has its own unique tissues, with each tissue having its own unique cells.
Answer:
One reason is that there was too much pressure in the bottom of the ocean, from all the water pressing together.
hope this helps :)
Explanation:
The existence of the ridge was discovered during the expedition of HMS Challenger in 1872. A team of scientists on board, led by Charles Wyville Thomson, discovered a large rise in the middle of the Atlantic while investigating the future location for a transatlantic telegraph cable
