When a population of any species decreases, it leads to a decrease in populations of species that feed on them, as there is less food available and they may die of starvation or competing against each other for food. Crabs are eaten by big marine animals, such as otters and terrapins. Algae and snails does not feed on crabs. Therefore, the correct answer are the options B. Otter and D. Terrapin.
Taxonomy scientists classify living things on eight different levels, In order to do this, they look at characteristics, such as their appearance, reproduction, and movement, to name a few.
Most EQ and volcanic activity occurs along the Pacific ring of fire. This is a region spanning the Pacific Ocean where plate tectonic motion occurs the most, hence is also a site of active volcanic activity.
Answer:
Symbiosis is any type of a close and long-term biological interaction between two different biological organisms, be it mutualistic, commensalistic, or parasitic.
Explanation:
I have the definition in my notes.
