<span>Abnormal
behavior of cancer cells begins when a single cell undergoes
transformation, a process whereby a normal cell converts to a cancer
cell. Transformation occurs after a genetic change (mutation) in one or
more genes that encode for proteins in the cell cycle control system.
Because a transformed cell grows abnormally, the immune system normally
recognizes and destroys it.</span>
Answer: salt
Freshwater is defined as having a low salt concentration, usually less than 1%.
Explanation:
Freshwater refers to the bodies of water that contain very low levels of dissolved salts. So, freshwater are unique for their low salt content (about 0.5% of salt) compared to the sea water with high salt content.
Examples of freshwater include rivers and spring
Answer:
The answer is down below.
Explanation:
Estuaries
-More than 80 percent of all fish and shellfish species use estuaries as primary habitat or as a spawning or nursery ground.
-Estuaries are often called the “nurseries of the sea”.
-Estuaries and their surrounding wetlands are bodies of water usually found where rivers meet the sea.
Abiotic factors
In an estuarine ecosystem, these factors are light, oxygen, water, nutrients, temperature, salinity, and space. So just divide these into three.
Biotic factors
These include plants and animals such as shrimp, fish, and oysters
A. 1 year
it is because it completes one full revolution in 365 days and 6 hours and it is equals to 1 year
