You are correct the answer is B. Good luck and good job
D. Disruptive selection
Because that splits the normal distribution into 2 separate distributions, like dividing a normal curve into 2 new extremes.
An indicator species is <span> is an organism whose presence, absence or abundance reflects a specific environmental condition. </span>
Active transport could transport material across the membrane against the concentration gradient
Carbon dioxide plays an important role in carbon cycle. Carbon dioxide is used by plants in the process of photosynthesis to make food. The food is eaten by animals to gain energy and performs cellular respiration which releases carbon dioxide back to the atmosphere. This is the process of biological carbon cycle.
In geological carbon cycle, carbon dioxide enters the ocean by precipitation and combines with elements like calcium forming a compound and becomes the component of living organisms. Carbon compounds settles in the ocean when the organisms die.