Answer:
Organ systems: human body and circulatory system
organs: heart
tissue: muscle
Explanation:
Answer:
The following will be different at the North Pole from the way she remembers the sky in Florida:
(1) The celestial equator is on the horizon.
(2) The celestial pole is overhead
(3) The way the stars rise or set.
UV rays reacting with the O2 molecules
I might be wrong a little but
Hope the helps :)
Answer:
A cell cannot function without them
Explanation: