The branch of biology that deals with animals and animal life, including the study of the structure, physiology, development, and classification of animals. The animal life of a particular area or period: the zoology of Alaska; the zoology of the Pleistocene.
2.2 x 10^-2
0.055 / 250 = 0.00022 - This would be 2.2 x 10^-4, but the question is asking for percent, not proportion, so multiply by 100% to get the percentage.
0.00022 * 100% = 0.022% = 2.2 * 10^-2
I think the correct answer from the list of choices above is option B. <span>The chemical combination of two or more different atoms in fixed amounts is called a compound. There are two type of compounds namely the ionic and covalent compounds.</span>
Answer:
Combination reaction
Explanation:
N2+H2 = NH3
they combine together to form a product
Answer:
atomic particles
The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).
