The vascular tissue of a plant transports various substances. Which substance would you expect to find in phloem, but not in xylem? a. Glucose b. Iron c. Potassium d. Water

Identify the type of energy used in each action. the flexing of an arm muscle: a signal transduction process by a neuron: a ball at the top of a hill: 1. electrical energy 2. mechanical energy 3. gravitational potential energy

The theories on the expansion of galaxies maybe re-examined to strengthen science should not be tested to strengthen science will weaken scientific knowledge if they change will become laws if they don't change

Ture or false evidence for evolution includes millions of fossils