90 million years ago (mya), a single bat species existed on a landmass. That species served as a common ancestor of the four bat species now found in the region. The image below shows how the landmasses have changed over time and the current distribution of the bat species.

Based on the geographical distribution of the bats over time, which of the following is most likely true about the evolutionary relationship of these species?

Twenty one miles per hour

answer: - b cells

explanation: -

there are many types of white blood cells present in our body. one such class of white blood cells are the lymphocytes. the b cells belong to the lymphocyte class of wbcs. the b cells perform their action against the pathogen by producing specialised proteins called as antibodies. these antibodies are produced as and when the b cells encounter pathogens in response to the antigens present on the surface of the pathogen. these antibodies bind to the antigens present on the pathogen and then, target them for destruction by other cells of the immune system.

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.

The answer would be c

The 3 steps are vasoconstriction, temporary blockage of a platelet plug, formation of a fibrin clot better known as coagulation.