I think the answer is b
so yeah that'll be B' option
hope its help
Answer:
4
Explanation:
Carbon has four valence electrons, so it can achieve a full outer energy level by forming four covalent bonds. When it bonds only with hydrogen, it forms compounds called hydrocarbons. Carbon can form single, double, or triple covalent bonds with other carbon atoms.
Answer:
Behavior adaptation
Explanation:
Behavior adaptation is where a animal behaves in a different manner that suits its environment or keeps the animal safe
Bodily functions that help keep it stable. Like sweating when your are hot keeps your body at a cooler temperature rather then burning up.
Answer:
Index Fossils
Explanation:
Index fossils are used by scientists to help them figure out the dating of discovered fossils or the correlation. They are also very known to appear in a (very) certain/specific age range.
Hope this Helps!
