Answer:
d. They are often keystone species
Explanation:
Top predators in an environment are the largest predators and sits on the top (apex) of the food chain in an ecosystem which do not have any natural predators.
As the top predators relative to its abundance has disproportionately large effect on its natural environment, they are the keystone species most of the time.
Hence option d. They are often keystone species is the right option.
This statement is false. Climate does affect the rate which weathering will occur. Weathering will occur when there is a physical or chemical process to the landscape. Freezing and thawing will turn minerals, like silicate, into clay. When the weather is hot it causes faster chemical weathering than it would in say colder locations. Rocks will also break down faster in a wet climate. So, climate can effect the rate of weathering.
The answer is spin.
Each quantum number that describes the two electrons in a helium atom is identical, except for the one that indicates their spin.
Yes, There is no spherical symmetry in biology. But is in Spherical
Answer:b. cellulose; cell walls of plants
Explanation: polysaccharides are polymers of monossacharides.they are the most abundant organic substance.it is found in the cell walls of plants . cellulose is a linear polymer of glucose residues.cellulose is an important component in the diet of herbivores and omnivores.they do not produce the cellulase enzyme for digesting cellulose.as a result,they depend on symbiotic relationship with bacteria and protozoa found in their stomach to produce cellulase.
