Answer:
The answer is D.
Explanation:
Sewers are connected to households and usually roads. When rain comes down, it goes down the drain in the road which leads to the sewers. The same thing happens with the answer C. A, household waste water, is connected to the sewers as well. So, since all three of these are correct, you would choose D.
Hope this helps.
Answer:population can affect the level of oxygen in water because of the too much of oxygen being released
Explanation:
Answer and Explanation:
The dendrite connects the axon of one neuron with the dendrite of another neuron to relay messages. Neurons transmit information to each other throught synaptic gaps. The cells release chemicals known as neurotransmitters to communicate with one another.
A synapse functions to allow transmission of nerve impulse from neurone to neurone. Acetylcholine is a substance that is used in impulse transmission. When an impulse reaches the synaptic knob, it stimulates the vesicles to move towards the pre-synaptic membrane releasing acetylcholine. The transmitter substance makes the membrane permeable.
