Answer: Option (A) and (D) are correct.
Explanation:
Atomic number means the number of protons holded by an atom. On the other hand, atomic mass means the sum of total number of protons and neutrons holded by an atom.
For example, in an isotope of oxygen as oxygen-15 with an atomic number 8 means that there are 8 protons.
So, number of neutrons present in oxygen-15 will be as follows.
Atomic mass = no. of protons + no. of neutrons
15 = 8 + no. of neutrons
no. of neutrons = 15 - 8 = 7
Hence, this isotope of oxygen atom has 8 protons and 7 neutrons.
Answer:
Species become endangered for two main reasons: loss of habitat and loss of genetic variation. A loss of habitat can happen naturally. Dinosaurs, for instance, lost their habitat about 65 million years ago.
Explanation:
Hope this will help
mechanical advantage is the number of times that a machine increases an input force
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True i believe because the dna is it’s taits
Comparison of Starch and Cellulose. Both starches and cellulose are carbohydrates<span>which are classified as polysaccharides since they are composed of chains of glucose </span>molecules<span>. While they are similar, starches can be used as energy sources by the human body while cellulose cannot.</span>