Answer:
splitting water into hydrogen and oxygen
Explanation:
because
Answer:
Hemagglutinin is an envelope viral protein used to attach to host cells and gain entry via endocytosis
<span>Most reflex arcs involve only three neurons. The stimulus, such as a needle stick, stimulates the pain receptors of the skin, which initiate an impulse in a sensory neuron. This travels to the spinal cord where it passes, by means of a synapse, to a connecting neuron called the relay neuron situated in the spinal cord.</span>
Answer:
Microscopes
Explanation:
cells were seen on the microscope.