I believe you’re referring to the body’s fight or flight response.
Answer:
B
Explanation:
Animals derive energy by eating plants or animals and using cellular respiration to make ATP. Plants capture energy from the sun via photosynthesis and make sugar and oxygen. They can then use the sugar to perform cellular respiration to derive energy.
Answer:
Natural selection.
Explanation:
Natural Selection:
Natural selection is the evolution's one of the basic mechanism in which phenotypic variant individuals or organisms survive or reproduce with change in the heritable traits in a population over generations. With the passage of time, this process help the organisms to adapt their environment.
So, the population A and population B organisms interbreed and produce offspring with the process of natural selection.
<span>Courtesy
is the example of which the three C’s. A courtesy is a polite remark or
respectful act. Complain about a bad meal, and you might get kicked out. But
the common courtesy is usually an apology from the manager and, if you're
lucky, a free dinner. </span>
Answer:
Chemical bond
Explanation:
A chemical bond is the force of attraction that keeps the atoms or ions together in a molecule or compound. when a bond is formed the energy is stored in it and the similar amount of energy is required to break that bond.
The bond which is formed by the sharing of electrons is called as covalent bond. In covalent bond the atoms which have partially filled valence shell are combined to fulfill their valence shell (Duplet and Octet rule) to obtain stability. The force of attraction is created between the shared electrons and nucleus of each bonded atom in covalent bond.
The bond which is formed by complete transfer of electron is known as ionic bond. In ionic bond the donor atom donate its electron to acceptor atom to obtain two or eight electrons in their valence shells. The electrostatic force between opposite charges binds the two atoms in ionic bond.
