BIOLOGY HIGH SCHOOL

A pond near a city park is found to be contaminated with both bacteria and excess nitrogen. The bacteria most likely came from _____, and the excess nitrogen most likely came from _____.

Answers

Answer 1
Answer: Excess nitrogen is brought in the pond from the fertilizer, which are ladden in nitrogen and phosphorous, and rain water or running water takes that nitrogen to the water bodies.Bacteria must have come from the sewage disposal in the pond. Sewage is rich in organic material and allows proliferation of bacteria, which is taken to the pond when the sewage is disposed in the pond.
Answer 2
Answer:

Answer:

runoff;sewage

Explanation:

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The development of some organisms, like sea turtles, are affected by the temperature at which the eggs are incubated. Typically, cooler temperatures produce more males, and warmer temperatures produce more females. How might climate change affect the reproductive success of sea turtles?Reproductive success will increase, because there will be more nesting ground available due to sea level rises.

Reproductive success will increase, because there will be more females to lay eggs.

Reproductive success will decrease, because there will be skewed numbers of males and females.

Reproductive success will decrease, because there will be longer migration routes due to sea level rises.

Answers

Answer:

The correct answer would be Reproductive success will decrease, because there will be skewed numbers of males and females.

Explanation:

Sea turtles incubate their eggs in the sand at nesting beaches. In cooler temperatures produce more males, and warmer temperatures produce more females.

If the temperature rise will be in the climate then there will be fewer males in comparison to the females which can lead to a decrease in reproductive success. If there will be a fall in temperature than there will be fewer females in comparison to males which also led to a decrease in reproduction success.

Thus, the correct answer is the third statement.
Reproductive success will decrease as there will be a skewed number of males and females.

If a smoker has a low tidal volume why might he feel tired and run down

Answers

oxygen flow is low and his lungs do not have a lot of capacity
The flow of oxygen in the smokers body is low as his lungs do not have enough magnitude.

Why is homeostasis important for survival

Answers

Homeostasis is maintaining an equilibrium or balance. Human bodies only function under very specific conditions, so it is important to maintain them through homeostasis. Otherwise, the proper conditions to function will be missing and we won't be able to function at all.

Some insecticides interfere with the removal of acetylcholine from the synaptic cleft. what effect will this have on muscle contraction

Answers

The effect of insecticides will result in prolonged muscle contraction.   Acetylcholinesterases are the enzymes that catalyze the breakdown of acetylcholine (Ach) in the synaptic cleft. This normally occurs, after the Ach achieves its effects on its receptors. On the other hand, acetylcholinesterase inhibitors inhibits the acetylcholinesterase enzyme thereby increasing the level and duration of action of the neurotransmitter ACh. Acetylcholinesterase inhibitors are used as insecticides.

Which question is most likely to be found in a dichotomous key for identifying a tree by its leaves?

Answers

leaf bases attached opposite to each other on the branch.

What is Dichotomous key?

A dichotomous key is an identification technique that repeatedly divides groups of organisms into two categories.

More details regarding the unique characteristics of a given organism are disclosed with each successive division. Once the organism no longer exhibits all of the chosen traits in concert with any other organism, it has been recognized.

In order to identify specimens with a dichotomous key, it is recommended to employ immutable traits (i.e. features that do not change). Size, coloration, and behavioral habits can all change across people and over the course of a lifetime.

Therefore, leaf bases attached opposite to each other on the branch.

To learn more about Dichotomous key, refer to the link:

brainly.com/question/2235448

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Answer:

Are the leaf bases attached opposite to each other on the branch? Answer C 2020

Explanation:

Malaria is one of the most common parasitic diseases in the world. It is caused by a protist from the genus Plasmodium and is carried by mosquitoes. When a mosquito carrying this protist punctures a human's skin, it releases sporozoite into the human. The effects on the human's internal environment are shown below.How does malaria affect the internal environment of the human body?

A. It causes the reproductive system to stop functioning.
B. It causes the liver to stop functioning.
C. It destroys red blood cells.

Answers

C. It destroys red blood cells.

Answer:

C. it destroys red blood cells

Explanation:

When Plasmodium sporozoites enter the body, they infect the liver. New cells called merozoites emerge from the liver and infect red blood cells. The merozoites eventually burst from the red blood cells, destroying them and releasing toxins that cause various symptoms.
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