The oxygen-rich surface water blends with the deeper, depleted water. The dissolved oxygen concentration in the mix can be too low to support life in the pond. Both fish and plankton can die from low dissolved oxygen following a turnover. Thus, turnover can happen if a cold rain and wind cools the surface water.
Answer:
1 and 2
Explanation:
1- some fungi are harmful to us like Aspergillosis, however not all of them are harmful to us.
2- all fungi are eukaryotes because they have a well organized cell.
3- fungi do not contain green pigment so therefore cannot do photosynthesis. They instead use digestive enzymes to digest the food externally.
4- not all fungi are harmful to humans or animals, for example yeast is a fungus but it is used a lot in cooking/baking.
Hope this helps good luck!
The answer is B) catastrophic fluid loss
Answer:
Option C, E. coli densities vary among cultures and with time, which will affect estimates of b-galactosidase production rates.
Explanation:
The activity of β-galactosidase depends on the optical density or the intensity of the color.
In regards to color, yellow color intensity signifies the qualitative parameter of the β-galactosidase activity while the readings obtained through colorimeter is quantitative parameter of the β-galactosidase activity. In the presence of lactose , the gene responsible for producing β-galactosidase in E. coli is either induced or switched off.
Hence , option D is correct
