The scientific method- Form an hypothesis
conduct an experiment to test that hypothesis
So yes researchers could review his experiment and his theory to detect any possible flaws.
Scientists do this all the time
Answer: amphibians
Explanation:
earthworms, grasshopper, lancelets, octopus, crab, tunicates, starfish are all invertebrates.
lancelets(cephalochordata) and tunicates(urochordata) are chordates but do not have a backbone.
Answer: Option D )Males have two different chromosomes.
Explanation:
The human males have two different chromosomes known as the XY- chromosome. Hence, a human male child receives a Y chromosome from his father with XY, and a X chromosome from his mother with XX.
Females, on the other hand have similar chromosomes (XX-chromosome), each X received from each parent.
Thus, the XY-chromosome in human males make for two different chromosomes.
The cell membrane helps to transport ions, nutrients, and waste.