The answers are to and from respectively.
Answer:
The heart consists of four chambers, two atria (upper chambers) and two ventricles (lower chambers). There is a valve through which blood passes before leaving each chamber of the heart. ... They act as one-way inlets of blood on one side of a ventricle and one-way outlets of blood on the other side of a ventricle.
Explanation:
Answer:
c sunlight acts as a catalyst for initiating photosynthesis
Answer:
102milligrams
Explanation:
Convert pounds to kilogram
Then multiply the result with the MG per kilogram