Hey there Ashley Gonzales1137,
Answer:
Adrenal Cortex
Hope this helps :D
<em>~Danielle♥</em>
C, triglyceride and cellulose
triglycerides make up lipids. cellulose is not a lipid, but a carbohydrate. carbohydrates are made from sugars :)
What are the experiments?
Radioactivity was discovered in 1896
Because the organism is distributed across the world, and isn't seen anymore, scientists can conclude tat they must have evolved. They can compare one species to the fossils they may have found, and determine that they were related. Then by looking at the species on another part of the world compare the same fossils to other animals and determine that they are similar, sharing a common ancestor.