Answer: mucilaginous sheath
Explanation:
Explanation:
Genetic evolution is the meaning of biologic life, in that it is the why and how of it, as well as the stock of future biological existence. The genes that survive -- and in turn the organisms they make -- are the winners in the existence game. ... We owe our existence to this process, and our future depends on it.
Answer:
Explanation:
(in an echinoderm) each of a large number of small flexible hollow appendages protruding through the ambulacra, used either for locomotion or for collecting food and operated by hydraulic pressure within the water-vascular system.
Answer: As altitude increases, temperature decreases.
Explanation:
This is because the higher you go the colder it gets, except in the thermosphere, which is the warmest layer of Earths atmosphere.
