If grass supplies a source of food for animals worldwide, then what relies on grass as a food source? Answer choices: - Bacteria - Soil - humans - More grass - perennials - alpacas - Animals - tortoises
Animals

If starfish use pheromones to communicate with each other, then what uses pheromones to communicate with each other? Answer choices: - starfish - bees - bacteria - honeybees - density - humans - h2o - insects
starfish

If radiation can affect genes that control the cell cycle, then what can affect genes that control the cell cycle? Answer choices: - Leptospirosis - acetic acid - water vapor - Smoking - butter - radiation - resistance - gasoline
radiation