Which sequence shows a decreasing level of complexity? a. Organs -> organism -> cells -> tissues
b. Organism -> cells -> organs -> tissues
c. Cells -> tissues -> organs -> organism
d. Organism -> organs -> tissues -> cells

"d.) carbon dioxide and hydrogen sulfide"

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.

i think the answer would be d

condenser is used to focus in the light microscope.