Answer:
When the salt water is mixed with fresh water,it is called brakish water which have the salinity 0.5 to 35 ppt.
Explanation:
The mixing of fresh and salt water is important for aquatic organisms.
The catadromous fish born in marine habitat but they spend their rest of life in the fresh water where growing and maturation takes place.
Ex- Eel is the common example of catadromous fish.
Like wise,
Anadromous fish born in fresh water and spends their life in the sea and return to fresh water for spawning.
For example Salmon, smelt, shad, are common examples.
Thus mixing of water is important for breeding and growing of these fishes.
More over, the brakish water contain world's most diversified life forms.
<span>The correct answer is Paramecia, Euglenoids, and Mold. These are all unicellular eukaryotic organisms. Mold may seem like one big piece but it's actually a bunch of unicellular organisms living together and constantly spreading over foor or similar things. They are most commonly predators.</span>
<u>Answer:</u>
<em>The purpose of genetically modified crops is increasing the food supply. </em>
<u>Explanation:</u>
<em>When crops are attacked by pests the yield of the crops reduces.</em> The natural pest tackling adaptations of the plant is not just enough to check the invasion of crops by pests. Introducing feature of pest resistance into the <em>genes of plant species will make them pest resistant.</em>
Genetic modification is the method used to achieve this objective. In genetic modification a previously absent feature is introduced into a plant species by various scientific techniques.<em> This feature can be pest resistance, chemical resistance, improved nutrient profile etc. </em>
The answer to your question would be letter D
