Why is the northern arctic glacier melting today?
a. global warming.
b. it is winter in the northern hemisphere and the temperature is colder.
c. it is summer in the northern hemisphere and the temperature is warmer.

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates

In sweet pea, gene c is responsible for color production and gene p is responsible for the purple color pigment. both of them are located on two different loci on different chromosomes. the flowers will be purple only when the plant has the genotypes as c_p_. no color will be produced with genotypes: ccpp, ccpp, ccpp, ccpp. thus, gene c controls the expression of gene p. what pattern of inheritance is exhibited here? a. pleiotropy b. epistasis c. multiple alleles

How can an organ, such as the lungs, work for multiple body systems?