What structure serves as a passageway for both air and food?

If you rubbed a piece of topaz against a piece of Quartz, what would happen?

Which flowchart correctly shows how genes are inherited? a. RNA→ protein→ DNA→ trait
b. RNA→ trait→ DNA→ protein
c. DNA→ RNA→ protein→ trait
d. trait→DNA→ protein→ RNA

Which of the following information can be determined from examining a pedigree diagram for trait P?A) relationships among generations; an individual's gender; whether an induvidual expresses trait P
B) an individuals gender; their allels for trait P;age
C) their age,their height,whethertheir expresses trait p
D) relationships among generations,eye colour,alleles for trait P

Describe two conditions necessary for a chemical reaction to occur

The Confederation Congress passed the Land Ordinance of 1785, which dealt with how land was distributed in the Northwest Territory. One of the following was one of the results of the Land Ordinance. Which is it?A. Immigrants from certain countries were prohibited from moving to the Northwest Territory.

B. The Northwest Territory became the most densely populated area in the U.S.

C. Americans who wanted to move to the Northwest Territory were given free land.

D. The national government was able to raise money as it sold land in the area.

Useful mutations become established much more quickly in a population of microorganisms, such as the cluster of E-coli bacteria shown here, than they do in humans. The MOST LIKELY reason for this is that microorganismsA) are smaller than humans.
B) reproduce asexually and at a fast rate.
C) are transparent, so their mutations are observed more often.
D) are exposed to environmental mutagens more often than humans.