The 4th one. Maintaining body temperature and cooling down
1st.
It is closest to the positively charged nucleus which attracts the negatively charged electron with the attractive force being inversely proportional to distance.
Antibiotic resistance in bacteria is an example of natural selection.
Explanation:
Antibiotic resistance in bacteria occurs when bacteria do not respond to the antibodies, chemical and drugs required to treat the bacterial infection.
The resistant mutant bacteria will survive the antibiotic action and would pass on this trait to its offspring. This passing of survival trait is the example of natural selection in the process of evolution.
Answer:
An atom is the smallest unit building block of matter.
A compound is a substance made up of one or atoms as a part of molecules.
Explanation: