The crayfish have its nerve cord on the ventral side rather than on the dorsal side. The ventral side is under the Crayfishes' exoskeleton, as opposed to the dorsal side where the exoskeleton is . If it is attacked it will be from the dorsal side and the nerve cord would be snapped easier. The function of the nerve cord is that if it gets attacked by a predator they will go for the top and it will still be able to move.
It has been estimated that active tobacco smoking causes close to 90% of lung cancer cases and is the cause of 87% of lung cancer deaths.
The answer is "autotroph."
Answer:
the question is not complete
Explanation:
There are three types of DNA Mutations: base substitutions, deletions and insertions
~Hello there!
Your question: Two animals are considered members of different biological species if they _____.
Your answer: Two animals are considered members of different biological species if they are male or female, but they can't interbreed.
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