19. Few plants can survive in a desert because there are many herbivores

the climate is too dry

too much leaching occurs

the sun is too hot

It is dry in deserts and hot too. There are special kinds of plants that grow in desserts means they have specialized characteristics which help them beat the dry and hot weather.

Succulent plants such as cacti, aloes, agaves have ability to store water in their leaves and stems which have thick and hard outer layer to avoid evaporation of water.

These plants have small spicules on their outer surface which protects them from animals as well.

So the answer is the climate is too dry.

Explanation:

the climate is dry

Explanation:

it doesn't rain much, and while a plant does need sunlight, it also need plenty of water.

from my research i have to the conclusion that decomposers, such as fungi, bacteria and invertebrates, play a critical role in nutrient cycling and without them the earth's ecosystem may not support life as we know it. elements such as carbon, nitrogen and phosphorus exist in limited amounts on earth, although huge amounts of carbon are being released into the atmosphere from underground sources now by humans. it is still extremely important that other nutrients be retained by the process of re-use. decomposers are organisms that are able to chemically break down dead material and make these elements available for use by other organisms. without this breakdown of dead material, dead bodies would pile up. so decomposers also play a role in clean up also. without them, life might not continue as we know it and dead material would overwhelm the earth.    

0