* The spongy layer of a leaf and the lungs have a similar structure because
they are made of tissues
they perform a similar job
they belong to only one organ

an organism's phenotype is the  form of a trait  that it  displays. for  flowercolor, a pea  plant  can  display  a phenotype of purple or white flowers. an organism's  genotype  is the alleles of a gene it contains. based on his data, mendel concluded that a phenotype can be  determined  by more than one  genotype.

the answer is c. it will give up it's valence electron to the other atom.