An animal that has external fertilization will produce more eggs than an animal that has in thermal fertilization because 1. The siblings help raise each other without any parental involvement
2. An animal can reproduce externally only once during its lifetime
3. It increases that chances that some of the offspring will survive
4. That way the parent animal can locate some eggs after they are fertilized

idk what the options are but

these is a strong electrostatic attraction between the ions hence a lot of energy is needed to overcome this attraction

this is why the boiling points are so high

i think the correct answer from the choices listed above is option c. the statement that is correct about   the cave and geyser would be that the cave is formed when groundwater reacts with the limestone in rocks and the geyser is formed when groundwater gets heated. hope this answers the questio