Answer:
Ventilation and mixing outdoor air with indoor air
Explanation:
Hypotheses must be provable. If scientists cannot prove a "hypothesis" right or wrong, they need to change it to a legitimate hypothesis - something you can prove.
If it is proven wrong, they can change certain aspects of it to make a more specific experiment.
Endocrine system consist of endocrine glands that produces hormones. This hormones are carried by blood to their sites of function
Answer: Branches: There are three major branches of biology – botany, zoology and microbiology.
Biology is: Biology Anatomy is the study of the internal structures of living things.
Explanation:. Botany is the branch of biology which deals with the study of different aspects of plants. Theophrastus is known as the father of Botany. Zoology is the branch of biology connected with the study of different aspects of animals.
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