Why do you think an animal cell does not have a chloroplast

What is found in many tetrapods but not in fish?

What is the source of energy in most ecosystems

Which structure produces and organizes the proteins that form the spindle fibers

Where does the exchange of oxygen, nutrients, and wastes occur?. a. in capillaries. b. in arteries. c. in the lungs. d. in the atria

Approximately what percentage of solar energy that passed through the atmosphere reaches earth?

In a food chain 90% of the energy is lost in the transfer at each trophic level, and only 10% passes as usable biological energy. What will happen if secondary consumers are removed from a food chain?

Which system consists of the heart and blood vessels?

How does a neuron integrate excitatory and inhibitory synapses?

Plants that have deep roots which extend, are able to reach cooler regions and absorbs water that the roots of other plants can't reach. this adaptation is expected in a habitat with which of the following climatic conditions A. cool and sunny B.

Definition: This is a machine that converts electrical energy into mechanical energy.