Bromothymol blue is an indicator dye that turns yellow in presence of an acid. It remains blue if the pH of the given solution is greater than 7.6 and yellow when the pH is less than 6. The yellow coloration is due to the formation of carbonic acid in the from the carbon dioxide present in the solution.
When aquatic plants are added to two test tubes containing bromothymol blue, stoppered and kept in dark for two days, no color change is observed. It is because the carbon dioxide present is utilized in the process of photosynthesis by plants. If the experiment is conducted in presence if the light, the color of bromothymol blue would be yellow due to the presence of carbon dioxide.
I think the answer would be needs. Hope this helps.
BRAINLEST WOULD BE HIGHLY APPRECIATED! :)
It's a part of carbon dioxide gas emitted when fossil fuels are burned and when living organisms breathe. It's in organic matter in the soil, and it's in rocks. But far and away the most carbon on Earth is stored in a surprising place: the ocean.
I hope this helped!!
Answer:
D.
Explanation:
Nonnative species is defined as the introduction of an alien species, foreign species or exotic species to a new region and affect the native species.
The exampe of nonnative species is introduction of water hyacinths from Asia in the United States which is affecting the native species and making the ecosystem crowdy.
Introduction of non-native species can disturb the balance of an already-established ecosystem by the native species including plants and animals.
Hence, the correct option is D.
DDT affects the environment negatively. In the past, DDT was known to not cause harm in human because the molecules of DDT are not absorbed by the human skin. But new studies suggested that humans actually have DDT on their bodies and it stays on the liver, kidneys and others. DDT is being used in agriculture; it would be drained into the bodies of water where fishes live, the fishes will then be eaten by birds, humans and other predators. This flow of contamination shows the interdependence of life on earth.
