All of the following is leading to less habitable land for human populations except fewer wildfires. A wildfire can burn a natural area.
A wildfire is a fire that can burn an entire natural area (e.g., forest, grassland, prairie, etc).
Wildfires are generally due to anthropogenic (human) unconscious activities, but they can also be natural (for example, wildfires caused by lightning).
It has been proposed that when considering the total surface area burned at the global Earth level, wildfires declined over the last decades.
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I think its false because you gain energy over the time you lose and have.
hope it helps
Agents that paralyze skeletal muscle by simple competitive inhibition of acetylcholine at muscle receptor sites are called?
a. nondepolarizing
b. depolarizing
c. antagonizing
d. repolarizing
Answer:
a. nondepolarizing
Explanation:
As the nerve impulse arrives, the synaptic end bulbs of the motor neurons release acetylcholine in the synapse. Acetylcholine binds to its receptors present at the motor endplate. This results in the opening of an ion channel in the ACh receptor to allow the movement of the Na+ into the cell. This makes the inside of the muscle fiber more positively charged, that is, depolarized.
Depolarization triggers a muscle action potential. Drugs or chemicals that paralyze skeletal muscle by competitive inhibition of acetylcholine at muscle receptor sites are called non-depolarizing as they do not allow the acetylcholine to facilitate the depolarization of the muscle fiber.
In a DNA molecule, three nucleotides make up a codon. A codon is creates a specific amino acid. Therefore, in order to work this out, we must calculate the number of codons that will not be affected by the mutation. This is done by finding the highest number that is divisible by 3 but less than 85. This can be done by:
85 / 3 = 28.333
So 28 codons will not be affected.
the chemical bonds were broken when they were digested and the chemical composition of the food was changed
