Answer:
Option (d).
Explanation:
Enzymes are bio catalyst that can increase the rate of a bio chemical reactions of the body. Enzymes work at specific pH and temperature conditions only.
The activity of enzyme is highest at its optimum temperatures. The treatment of enzyme with excess heat or cold can decrease the enzyme activity. The exposure to cold decreases the activity of a enzyme as motion of the molecules decreases at low temperatures.
Thus, the correct answer is option (d)
The following option are correct:
1. There will be interspecific competition between foxes and tigers.
Competition for food between animals of different species is called interspecific competition while that between the same animal species is called intraspecific competition.
2. The energy received at the tropic level of carnivores will be less than the usual amount.
The energy received at the trophic level become reduced because the amount of food available for the carnivores has been reduced.
3. There will be decreased biomass at the trophic level of carnivores.
Decrease biomass will occur at the trophic level of carnivores because, those carnivores that can not survive the food reduction problem will die off.
A substance that can be used or prepared for use as food
Answer:
The frequency would be stable.
Explanation:
Based on the most common symptoms of cystic fibrosis, the disease only appears on adults and elderly. This feature means that the frequency of the disease would not drop or raise because they would still reproduce and pass the allele from generation to the next, maintaining the frequency stable.
B. Methane (Ch2) is released by animals and contributes to global warming