Red blood cells pick up oxygen unhealed ( breathing in ) air and carry it through blood stream.
Answer:
carbon and hydrogen
Explanation:
elements used in the photosintheses
Answer:
Because the individual will infect others unknowingly
Answer:ITS H
Explanation: BECAUSE I SAID SO
Answer:
Fact: a set of data or observations that have been shown to be accurate through multiple trials.
Hypothesis: a proposed explanation for an occurrence based on available data, observations, or evidence
Law: a well-supported explanation of all the evidence related to a natural phenomenon
Theory: a description of a natural phenomenon that is always observed to occur under specific conditions
hope this helps :) :D <3