Which of the following lives in a prairie ecosystem? grass mushroom oak tree woodpecker

Each trait of a plant is determined a. an allele b. one gene c. a pair of genes d. one dominant gene

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

Which of the following is a common response to cell signaling?