26) The reason why people addicted to cocaine require more of the drug to simulate the same "high" after repeated use is because A Dopamine neurotransmitter stops being produced in the pre-synaptic neuron.
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B Axons in the pleasure/reward center of the brain are damaged by cocaine.
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C Post-synaptic neurons in the pleasure/reward center decrease the number of dopamine receptors.
D The dopamine re-uptake channels blocked by cocaine keep dopamine in the synapse for a longer duration,

If a fungus a plant take up water and nutrients, that would be an example of which type of relationship? a. commensalism b. symbiotic mutualism c. predation d. parasitism

Apopulation of black bears depends on salmon from a stream for food. if a drought causes the stream to run dry one year, how will this likely impact the black bear population?

How do temperature and salinity affect deepwater currents? question 15 options: as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.