When a blood vessel is injured, which of the following is responsible for clotting?

a. white blood cells
b. platelets
c. actin filaments
d. dead bacteria

actually general science

structure is maintained and sustained by:

-cytoskeleton: gives cells coherence

-cell wall: support

-cytoplasm: shape

hope this .

i got something better   a catchphrase here it is

ahem  

ahem

what the squwock

explanation:

here is the answer

water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. weathering is the breaking down or dissolving of rocks and minerals on earths surface. once a rock has been broken down, a process called erosion transports the bits of rock and minerals away.