Samuel visited an ecosystem. he found that the weather is very hot and dry, the entire land is surrounded by sand, and the plants that have thorns with fleshy leaves. which ecosystem did samuel visit?
a. tropical rainforest biome
b. desert biome
c. grassland biome

hey there the answer is desert biome.

the biome you described cant possibly be a tropical rain forest since it is surrounded by sand and very hot and dry and a grass land isn't covered in complete sand either    

the correct answer would be desert biome

i hope this helps

enzyme speed up the reactions

wegner's theory did not explain how the continents could move

explanation: