It is harmful because motor vehicles spit out gas and like fumes. That can lead to pollution in the air.
It is beneficial because it helps people get to places they need to get to quicker
Answer:
A) the lymphatic system only carries fluid away from tissues.
Explanation:
More differences between lymphatic system and circulatory system are:
• Circulatory system consists of a network of blood vessels through which blood is pumped by a “pump” called heart. In lymphatic system there is no such thing as a pump (only lymphatic vessels and lymph nodes)
• Lymph capillaries are closed on one side, so lymph does not circulate, but only drains to reach veins .
• Circulatory system has different role than lymphatic system: it tranports oxygen and other gases, nutrients and hormones, but also wastes that need to be excreted. On the other hand, lymphatic system has a role in immune system, fat and vitamin absorption and transportation.
I don’t know sorry for your ururyeuey yy type in your cash statement and you don’t have a comment about the same dog that I
Answer:
The type of ion channel opened will be the most important factor.
Explanation:
At certain occasions a given neurotransmitter can combine with a K+ chemically gated channel and at certain occasions the same neurotransmitter can combine with a Na+ chemically gated channel. Thus, the same neurotransmitter can produce depolarization if it opens the Na+ channel and a hyper-polarization if it opens the K+ channel.
In these situations, the structural make-up and sensitivity of the postsynaptic cell really determines if the neurotransmitter will inhibit (depolarize) or excite (depolarize) the postsynaptic cell. It is more essential to know the kind of channel, which opens than the particular identity of the neurotransmitter.