Agroup of words that has a subject and a verb is called a
clause
subject
preposition
phrase

It's to know your purpose before you read something because a purpose can:

Choose the letter of the word that most clearly expresses the tone in each passage. if you are unfamiliar with any of the words, look them up before you select the correct answer. we have come together this afternoon to mourn the deaths of sixteen miners—our friends and neighbors—who were trapped by fire yesterday, deep below the earth. they lived bravely and they died too soon, leaving behind grieving wives and bewildered children. we bid them a final farewell. question 1 options: forgiving sorrowful angry amused

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: