Answer:
oxygen and hydrogen had equal electronegativity.the covalent bond of water molecules would not be polar,and water molecules would not form hydrogen bonds with each other
Explanation:
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I think metastasis is a secondary tumor in a different part of the body that arises from a cells from the primary tumor. Metastasis means the spread of cancer cells. Cancer cells may break away from a primary tumor and enter the bloodstream or lymphatic system and is then spread to other parts of the body.
The reproductive system. The seeds are a mean for plants to reproduce themselves
It is unchanged and can be used again for the same chemical reaction.
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Answer:
What does the letters represent on the homologous chromosomes?
The letters represent allele which occurs in pairs e.g Aa or AA
Explanation: