What is a a space or room within the heart called

Select the situation bellow that would produce a total displacement of zero. a. a trip to the moon and then to mars b. a horse galloping from one end of a field to another c. the criss-crossing path of a bug as it flies from flower to flower d.a round-trip ride to school and back

Plants consume most of their carbon from a. the soil b. the water c. the roots d. the air

Kinases add - groups to other enzymes. this activities some enzyme while inhibiting other