Answer;
-Hot desert biome
Explanation;
Hot Desert is characterized by very little rainfall or a lot of rain in a very short period. The soils are often salty because minerals do not get washed away. Thus, the climate is characterized by a very little precipitation.
-Plant adaptations: There are few plant species. these plants are adapted to resist drought and store water. For example; Spiny cacti that have thick, fleshy stems that conserve water are common. Their roots extend metres away from the plant to absorb water. Other plants have small, thick, waxy leaves that also store water. Many plants have spines or produce chemicals that protect them from being eaten.
An aquatic food chain would be found in earths atmosphere
A. RNA is single-stranded and DNA is always double-stranded
this is the correct answer, hope this helps. it cant be B because RNA mutates before forming DNA, and protein helps with protein synthesis, so not D