A rigid external covering for the body in some invertebrate animals is the definition of an exoskeleton, which this spider has. 
An ectotherm is an animal that is dependent on external sources of heat. Fish are ectotherms. 
Grapes have gibberellins which produce stem elongation, germination, and flowering
while and after my brother runs, his body sweats due to the fact that it is overheating and needs to get back down to normal temperature. This is homeostasis 
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