Darwin's Natural Selection Worksheet Read the following situations and fill in the chart for each of the four parts of Darwin's theory of
natural selection.
D There is a species of worms that eat at night (nocturnal) and ones that eat during the
day (diurnal). The birds eat during the day and seem to be eating ONLY the diurnal
worms. The nocturnal worms are in their burrows during this time. Each spring when
the worms reproduce, they have about 500 babies but only 100 of these 500 ever
become old enough to reproduce.
Overproduction:
Genetic Variation:
Selection:
Adaptation:

answer; i believe the correct answer is (replication is not conservative);

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.

layer 3 is younger than layer 6.