The number of electrons/protons (both are the same number) is equal to the atomic number.
Brainliest please :)
Vertebrates have a back bone. They have living endoskeleton, pharnyx and efficient respiration, advanced nervous system, and paried limbs.
X - linked traits appear more often in males because males only have one x chromosome. One copy of an x - linked trait is all that a male would need to possess that trait. Females have two x chromosomes, so they would require 2 copies of the x - linked trait in order to possess it.
<span>The Answer is D. Maintaining Structure</span>
C...? what's the question