In the context of "The big trip up yonder," the word "issue" means a problem that must be resolved.
Explanation:
"The big trip up yonder" tells the story of what happened in the USA after the Anti-Gerasone drug was created. This medicine interrupts the aging process of the body, leaving people with their bodies always functional and young. This medicine is very cheap and easily distributed and as the whole society is afraid of aging everyone takes the medicine.
As a result, people can live their lives normally even with advancing age, which allows people to remain fertile throughout their lives. This causes everyone to have many children, which ends up creating a problem of overcrowding in the country. The word "issue" refers to this problem and the need to fix it.
B. Geothermal refers to heat sources on the Earth’s crust
Explanation:
The geothermal energy is the heat that is derived from the storing of energy that creates by the earth's temperature and the earth's crust is origin for this type of energy along with the radioactive decay of the elements of the crust.
<u>Thus said to be earth's internal heat and needs to be trapped as it can get lost during the formation stages. </u>
The temperature that occurs at the earth's core and the metal zone reaches up to 4000°C and thus the high temperature causes the rocks to melt and give rise to the temperature in the plastic mantle to get activated by the convection currents that reach the surface.
Some examples of this geothermal energy are those of the hot spring and the rising lava or the magmas.
These eruptions are produced when magma comes in contact with shallow groundwater causing the groundwater to flash to steam and be ejected along with pre-existing fragments of the rock and tephra from the magma.
