Answer:
pulmonary vein
Explanation:
The pulmonary veins
transfer oxygenated blood from the lungs to the heart.
It helps complete the pulmonary circuit, by receiving oxygenated blood in the alveoli and returning it to the left atrium.
Answer:
Evolution
Explanation:
Evolution is a gradual change in a population that occurs overtime in a species.
Answer:
c. sound
Explanation:
Matter is formally defined as being any substance that has any amount of mass and takes up space by having volume. Dirt, Humans, and Water all have a different level of mass and take up a different level of space. Sound on the other hand does not have neither mass or volume, it is instead a wavelength or a constant vibration that travels invisibly through the air. Therefore it is not composed of matter.
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Plants used in first-generation crosses were called P, or parental generation, plants.Mendel collected the seeds produced by the P plants that resulted from each cross and grew them the following season. These offspring were called the F1, or the first filial (filial = daughter or son), generation.
Answer:
corona
AND TEENAGE MUTANT NINGA TURTLES
Explanation:
