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Answer:</h2>
Chalk is a <u>C) Compound</u>.
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Explanation:</h2>
Element refers to one single substance which is made up of atoms and sub atomic particles namely electron, proton and neutron. A colloid is a blend where one substance of minutely scattered insoluble or solvent particles is suspended all through another substance.
Solution is composed of two components solute and solvent. When elements combine together it leads to the formation of compound. Chalk is considered as compound because, it is a substance formed by fusion of carbon dioxide and calcium hydroxide.
Answer:
Physical science is the study of the inorganic world. That is, it does not study living things.
Explanation:
<h3>Hope it helps!! </h3>
The answer should be D. Electrons
Answer;
Low birth weight.
One of the most consistent and best documented effects of cigarette smoking during pregnancy is low birth weight.
Explanation;
Smoking during pregnancy has various effects on the fetus, causing a baby to be born early or to have low birth weight which makes it more likely for the baby to get sick and stay in the hospital longer.
Additionally; smoking during and after pregnancy is a risk factor of Sudden Infant Death Syndrome.
