Weeds have started to bust through concrete in an abandoned parking lot. It will take hundreds of years for this community to come back. This process is 05 at
Select one:
O a. primary succession
O b. secondary succession
c. habitat fragmentation
O d. nutrient cycles
05 at

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.

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?

Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. an incomplete dominance cross is performed between a bird that is homozygous for red feathers and a bird that is homozygous for blue feathers. purple offspring result. then, two of the purple offspring are crossed. according to the punnett square for this cross, how many of the offspring from the second cross will have a feather color that results from incomplete dominance? 1 in 4 2 in 4 3 in 4 4 in 4