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

All living thing in domain are sorted into

In an ecosystem, a population can be defined as A. all individuals of a species born in a specified month in every region of the world. B. all individuals of a species that exist or have existed in a given place. C.

Objects that are able to fall have what type of energy?

What flowers usually have either three petals or a multiple of three petals?

Mark has diabetes and needs to undergo dialysis twice a week. Dialysis purifies the blood by removing waste and excess water from the blood.

Where is the moving electric field that causes Earth's magnetic field? A.) earth surface B.) in space C.) earth mantel D.) earth core

Cost minimization is an appropriate strategy in which stage of the product life cycle? a. introduction b. growth c. adolescence d. decline e. retirement

How can a kidney transplant be carried out?

Two of the risk factors for Down's syndrome include which of the following? Options exposure to high temperatures increased age of female infectious hepatitis over exposure to sunlight

What is the main difference between the life cycles of members of phylum bryophyta and phylum pteridophyta?