Aquatic organisms in lakes and ponds are often able to survive the water underneath a layer of ice because the water underneath the ice remains liquid. Which property of water is primarily responsible for creating these favorable conditions for aquatic life?

Answers

Answer 1

Answer:

The property is that water expands when it freezes and oxygen is trapped inside

Explanation:

Underneath the frozen upper layer, the water remains in its liquid form and does not freeze. Also, oxygen is trapped beneath the layer of ice. As a result, fish and other aquatic animals find it possible to live comfortably in the frozen lakes and ponds. The oxygen is present in water under the ice and this oxygen is used for breathing by the marine and aquatic animals.

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In 1967 a penicillin-resistant pneumonia, caused by Streptococcus pneumoniae and called pneumococcus, surfaced in a remote village in Papua, New Guinea. At about the same time American military personnel in southeast Asia were acquiring penicillin-resistant gonorrhea from prostitutes. By 1976, when the soldiers had come home, they brought the new strain of gonorrhea with them and physicians had to find new drugs to treat it.

In 1983 a hospital-acquired intestinal infection caused by the bacterium Enterococcus faecium joined the list of bacteria that could not be killed by penicillin.
Which of these BEST describes why certain bacteria have become resistant to penicillin?
A) The penicillin in the 1970's was much weaker that the penicillin used today, thus it was not as effective.
B) Penicillin was not effective in treating any bacterial diseases, so the doctors had to find new treatments.
C) These new bacterial strains came out of the jungles and forests already equipped to be penicillin-resistant.
D) Penicillin was so heavily prescribed by doctors that it led to certain, more fit, strains of bacteria to be able to survive.
2)

Answers

I think B but i’m not for sure

Answer:

D. Penicillin was so heavily prescribed by doctors that it led to certain, more fit, strains of bacteria to be able to survive.

Explanation:

Researchers thought penicillin was the cure for all, and thus it became overused. Through natural selection, new, stronger strains of bacteria developed.

Andy lives in the southern hemisphere . What will he most likely experience in August

Answers

He would be experiencing winter because the northern and southern hemispheres have flipped seasons. Whenever it's summer in the Northern hemisphere, it's winter in the Southern, and vice versa.

Carbon is found in carbonate rocks, such as limestone, in the atmosphere as carbon dioxide gas, in water as dissolved carbon dioxide, and in all organisms as organic molecules, such as carbohydrates and nucleic acids. Although these varying carbon-containing compounds exhibit different physical and chemical properties, their existence demonstrates

Answers

Answer:

conservation of matter and energy

Explanation:

White blood cells, part of the ___________ system, work closely with the ___________ system to protect us from infection and disease.A)
circulatory; immune
B)
endocrine; lympathic
C)
circulatory; excretory
Eliminate
D)
circulatory; respiratory

Answers

Answer: The correct answer for the fill in the blank is A) Circulatory, immune.

Circulatory system also called cardiovascular system is a vast network of organs and vessels that allow the circulation of blood so as to transport nutrients, oxygen, other gases, and hormones to different parts of the body.

Blood contains different cells like white blood cells, red blood cells, platelets.

White blood cells ( also called leukocytes) work closely with immune system. They provide defense against pathogen ( disease causing organisms) through various ways ( like ingesting foreign material, producing antibodies to clear the antigens). By doing so, they protect us from infection and disease.

the answer is A)
circulatory; immune

Why are all the different parts of the cell necessary

Answers

The different parts of the cell are necessary because, unlike prokaryotic cells, eukaryotic cells undergo specialization for specific functions, which allows them to be more efficient in their environments. Without some parts of the cell, this efficiency would be reduced drastically

Which part of the brain is indicated by the arrow below?Cerebrum
Cerebellum
Pons
Medulla oblongata

Answers

Answer: Cerebrum because it is the largest part of the brain

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Only answer if you have an answer to one of the questions. Thank you.

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