Read the following passage to answer questions 7 and 8. the sentences are numbered to you answer the questions
(1) the solar system is made up of the sun and the planets that go around it. (2) the planet closest to the sun is called mercury (3) the planet next closest to the sun is venus. (4) earth is the third planet
and mars is the fourth (5) life on earth is thought to have begun about three billion years ago. (6) for many millions of years, the most common life form was bacteria (7) scientists have tried hard to
understand how plants and animals developed from these simple, one-celled creatures.
7. the passage is made up of two paragraphs. which sentence begins the second paragraph?
a. 4
b.3
c.5
0.6
8. the topic sentence in the first paragraph is number
a. 1
b. 2
c.4
d.5

In a hypothetical breed of dogs, coat color is controlled by two genes. there are six different coat colors in this breed: black, brown, cream, gray, silver, and tan. consider the following crosses.cross 1: black females from a lineage of all black dogs are crossed with brown males from a lineage of all brown dogs. f1 males and females are all black. when f1 are intercrossed, f2 males and females are black or brown.cross 2: black females from a lineage of all black dogs are crossed with tan males from a lineage where all males are tan and all females are cream. f1 males are black, f1 females are gray. when f1 are intercrossed, f2 males and females are black, brown, gray, or tan.cross 3: silver females from a lineage where all females are silver and all males are gray are crossed with brown males from a lineage of all brown dogs. f1 males and females are all gray. when f1 are intercrossed, f2 males are black, brown, gray, or tan, f2 females are cream, gray, silver, or tan.select the correct statements regarding the mode of inheritance of the coat color genes.a) both genes are x-linked.b) both genes are autosomal.c) one of the genes modifies the expression of the other gene.d) each gene has an additive effect on the intensity of coat color.e) each gene independently specifies three colors.f) one of the genes is autosomal, and the other is x-linked.

Are the earth's ocean floor and continents the same age geologically? why or why not?

Viruses can be transmitted through air, water, food, insect bites, and direct skin contact. once a virus gains entry into the body, it invades a host cell in order to? a. synthesize antibodies for defense b. deactivate the host cell's defenses c. access cell processes for reproduction d. metabolize host proteins and grow