Answer:
<em>D. Molecules are made of atoms of the same element or different elements.
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Explanation:
Molecules are made up of atoms. The atoms forming the molecule can be same or different. The size and function of the molecules vary from each other. The properties and function of atoms change as and when it forms a molecule.
The atoms combine with the help of a bond and it can be a covalent bond or ionic bond or hydrogen bond to form a molecule. The bond between the atoms gives shape to the molecule.
The following question is how would you divide 16÷4
Answer:
<h2>4/9</h2>
Explanation:
Given;
As given, probability of obtaining a male is = 2/3;
sexes of each individual are independent.
Probability of obtaining two males in cluster of three is;
2/3* 2/3= 4/9
So the probability of obtaining two males in cluster of three is= 4/9
There are three ways of calculation.
Answer:
The fossils that provide information on the formation of an oxygen-rich atmosphere are the stromatilites from the Precambrian era. These are layered and columnar fossils consisting mainly of cyanobacteria which were the original life form back then. These bacteria took in carbon dioxide and produced oxygen by photosynthesis as early as 2.5 billion years ago (the earth is about 4.5 billion yrs old).
Explanation:
Rapid cooling produces small crystals, and slower cooling produces large crystals.
Hope this helped!
