The absolute number of molecules of drug required to elicit a response
The answer is Chordates
Chordates belong to the pylum Chordata of the Animal Kingdom.They have the following characteristics;
Lower vertebrates have a notochord which is a hollow nerve chord that is located dorsally of the animal while higher vertebrates have a vertebral column of bone and cartilage. They have a coelom which is a body cavity that differentiates higher vertebrates into organs and digestive tract.
Answer:
B
Explanation:
Building more parks and houses will take away homes for animals living there.
So other scientists can try the exact same experiment and see if they both got the same results.
The answer is nitrogen fixation.
Hope this helps
