I can try helping your brother
For the 1st question:
Biomes are named for the vegetation that grows there because plants that grow in an area determine the other organisms that can live there.
2nd:
Most organisms are adapted to live within a certain range of temperatures and will not survive at temperatures outside of their range
3rd:
In general, the larger a plant is, the more water it needs.
4th:
Latitude-The distance north or south of the equator and is measured in degrees
Altitude-The height of an object above sea level
Question 4 second part of the question:
Latitude refers to the distance of a location on Earth's surface from the equator.
Altitude is defined as how high a location is above sea level (think of a city in the mountains having a high altitude).
This is the last part of the question:
Therefore, if an organism lives in abiome that is close to the equator and at a lowaltitude, the organism must be able to survivein a very warm, moist environment.
I hoped this helped for your brother!