Homologous chromosomes are: 1 point
a.
the same shape size and contain the same genes and alleles
b.
are exactly the same in every way
c.
are the same shape size and contain the same genes but could have different alleles
d.
do not exist

Which best explains how a heat pump can heat a room? cold air from the house is moved through pipes, where it absorbs thermal energy. warm air from outside is pushed into the house to replace the cold air. combustion warms the air when chemical energy is transferred to thermal energy. fuel is used to move a piston, which pushes warm air into the house.

What is the main fuel source for the work of the cell

Number and variety of living organism; includes genetic, species, and ecological types