Answer:
O H20 and CH4, but not O2
Explanation:
Compounds consist of multiple elements. O2 is just two oxygen atoms, meaning two atoms from the same element.
Humans evolved 3 billion years ago after the earth was formed.<span />
Answer:
Outermost
Explanation:
Valence electrons are the electrons in the outermost shell, or energy level, of an atom
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Answer:
Two parents with B blood type can produce a child with either B or O blood type. One parent with A and another with B can produce a child with A, B, AB or O blood types. If one parent has A and another has AB, they can either produce a child with A, B or AB blood types.
Explanation:
took biology
Answer:
Explanation:
Lipids also come from foods, most commonly in the form of cholesterol or triglycerides. Certain kinds of essential lipids are often present in vegetable oils and legumes, as well as the cell membranes of just about every living thing.
