For an essay about threats to our health which of the following sources appears to be most credible

Which change should be made to improve this sentence? allen jumped in the puddle and his new shoes got wet and muddy.a)the new shoes got wet and muddy and allen jumps in the puddle.b)allen jumped in the puddle and got his new shoes wet and muddy.c)allen jumped in the puddle and gets his new shoes wet and muddy.d)the new shoes are getting wet and muddy and allen jumped in the puddle.

Biologists recognize five levels of cell organization. the lowest and simplest is the cellular level. organisms here are either unicellular organisms, like protozoa, or colonial organisms. colonial organisms are composed of single-celled individuals that stay together to sustain the life of the whole colony. next on the scale of complexity is the level occupied by tissue. a tissue is a group of similar cells which perform a similar activity. tissues that are organized around a common function together make up an organ, the third level of complexity. the fourth level of organization is the system, formed by a group of organs which together perform a specific bodily process. the fifth and highest level is the organism level, in which body systems work together in a structure capable of independent life. main idea:

Me with this questions i really need them right 4. any complex sentence contains a. independent clauses only b. dependent clauses only c. one independent clause and one or more dependent clauses d. neither independent clauses nor dependent clauses 5. an appositive is a phrase or clause that a. is a noun or group of words acting as a noun b. is placed right next to a noun c. gives more information about a noun d. all of the above 6. select the correctly punctuated sentence containing appositve. a. the vocational counselor an experienced placement specialist has agreed to me get a job. b. the vocational counselor, an experienced placement specialist has agreed to me get a job. c. the vocational counselor an experienced placement specialist, has agreed to me get a job. d. the vocational counselor, an experienced placement specialist, has agreed to me get a job.