Hiking is kinetic energy.
A large class of molecules is called a macromolecule.
Answer:
Option A, keystone species
Explanation:
Keystone species are responsible for controlling any species from becoming dominant over all other species. The keystone species are found at the top of all the energy pyramids and food chains.
They control the explosion of population of prey and hence regulate the overall ecological diversity.
Some common example of keystone species is as follows –
Bison, prairie dog, large mammalian predators,
Hence, option A is correct
They are heterotrophic- not photosynthetic because they cannot perform photosynthesis
Its c the number of chromosomes in a cell. I hope this helped
