In the sentence provided, "Racers, start your engines" the word <em>Racers</em> represents a noun of direct address.
These nouns of direct address are defined as words that name a person, places, things or ideas. In the particular case of the sentence provided this name (Racers) reffers to the persons who are taking part in the career.
Answer:
b
Plants absorb the nutrients they need from the soil to make food, so the type of nutrients in the soil need to match the type of nutrients needed by the plant.
Answer:
They are all past tense none of them are currently active...
Explanation:
Ex: (wrote,given, made, and won) They are all past tense
Simile. "They look like white elephants" is a simile because it is a comparison using the word like. A metaphor would say something is something else, alliteration is the repetition of a beginning sound, and personification gives something human-like characteristics.