Answer: Notochord,Nerve cord, pharyngeal gills
Explanation:
1.Presence of notochord that gives them skeletal support this also develops into between Column in vetertebrates.
2.presence of dorsal hollow nerve cord that develops into the brain and spinal cord which is the nervous system. develops into the central nervous system
3.presence of pharyngeal slit that develops into gills in some aquatic organism and its develops into jaw in some mammals. The gills is use for removal of water that enters the mouth while feeding.
If the tree is 30 m around, then shouldn't we take the lengths of the arms and divide it into the perimeter of the tree? So what we do is take 30/1.3 = about 23. So it would take about 23 children to stretch their arms around the tree.
I believe it is convergent evolution
Answer:
Major element
Explanation:
The six most common element are living thing carbon,hydrogen,oxygen,nitrogen,phosphorus and sulfur.
Answer:
Antibiotics are compounds produced by bacteria and fungi which are capable of killing, or inhibiting, competing microbial species. ... But it was not until 1928 that penicillin, the first true antibiotic, was discovered by Alexander Fleming, Professor of Bacteriology at St.
