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Yuliya22 [10]
2 years ago
13

Explain why the passenger pigeon,which was once the most abundant bird in north America,disappeared completely.

Biology
1 answer:
denpristay [2]2 years ago
4 0

Answer with Explanation:

The "passenger pigeon" used to be North America's most popular bird. Their population even reached<em> 3 billion</em> (or even more). They always traveled together. Their decline in number was noted in the<em> 19th century</em>. People became interested in hunting them for food because<em> they were relatively cheap and tasty</em> . They were also a<em> great source of protein</em>. It was easy to hunt them down although they could fly very fast because<u> their flocks were huge in number.</u> Some people killed them because <em>they didn't want the birds ruining their crops</em>. Their<u> nesting grounds</u> were also disturbed, which ultimately drove them away from the forests. People were overkilling them, and this sped up with the <em>advancement of technology</em>. The number of pigeons killed outnumbered the newborn pigeons, and after decades of hunting them down, their number dwindled with the<em> last one passing away in </em><em>1914.</em>

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During the transmission of signals across a neuromuscular junction, which of the following happens first?
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Answer:

The correct answer is A acetylcholine binds to a receptor protein on the motor end plate

Explanation:

The neurotransmitter acetylcholine is released by the motor neuron during the transmission of signals across a neuromuscular junction.

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         This ultimately result in the influx of sodium ion inside the muscle cell thereby causing depolarization to generate an action potential.

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The question is incomplete as the background of the case and symptoms of Jarod is not provided, however, the missing data required for the question is as follows:

Jared was investigating a drug cartel and ate a meal with one of the suspects. After the meal, he had trouble breathing and felt weak and dizzy. Jared may have been poisoned. He is being taken to the CIA hospital for treatment. You are a medical toxologist working for the CIA. It is your job to find out what poison was given to Jared and try to save his life. Patient: Jared Sondheim Age: 32 Occupation: CIA Agent Symptoms: Muscle Weakness Shortness of Breath Dizziness. Jared has arrived at the hospital! It is your job to find out what toxin was used to poison Jared. You can then give him the correct antidote to save Jared's life.

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