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andrew-mc [135]
3 years ago
11

Which of the following is a sign of poor quality water? (2 points)

Biology
1 answer:
Stella [2.4K]3 years ago
7 0

3. High phosphate content


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If body temperature is too high some blood vessels increase in size and sweat glands will excrete sweat resulting in a lower bod
Svetradugi [14.3K]

The answer is -Homeostasis

The human body has the ability to maintain a constant internal environment so that every organ function properly. Maintenance of a constant internal conditions is called homeostasis. For examples, a healthy human body functions optimum at normal temperature which is 37°C. If the body temperature increases well above 37°C, then by self-regulatory process, our  body brings down temperature to the normal. This is homeostasis.

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3 years ago
What is the term used to describe the energy needed to get a reaction started?
professor190 [17]
Its activation energy
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Compare the leaf hairs on the upper leaf surface with the leaf hairs on the lower leaf surface.
Anestetic [448]

The main difference between upper

epidermis and lower epidermis is

that upper epidermis possesses a cuticle layer whereas lower

epidermis possesses a large number

of stomata. surfaces, respectively. ... possesses a cuticle layer whereas lower epidermis possesses a large number of stomata

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3 years ago
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What is the basic unit of structure and function in plants, animals, and bacteria?
padilas [110]

Answer:

The cell is the basic structural and functional unit of life. Cells are independent, single-celled organisms that take in nutrients, excrete wastes, detect and respond to their environment, move, breathe, grow, and reproduce.

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What is the basic unit of structure and function in plants and animals?

Cell Theory !

All living things are made of cells. The cell is the basic unit of structure and function in all living things.

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4 0
3 years ago
Some have speculated that the origin of life occurred at geothermal vents. amino acids can form there. compared to the amino aci
cluponka [151]

There are a number of amino acids that have formed under certain environmental conditions if the required elements are present and the energy conditions ar compatible with chemical assembly. These conditions have also allegedly formed amino acids on meteors, asteroids and comets.


But, amino acids are a very minor component of more complex biochemical assemblies required for life. Pentose sugars are also required, which form under different environmental conditions than amino acids. More importantly, only left-handed homochiral amino acids and right-handed homochiral sugars can form functioning biochemical assemblies that are viable in an organism. But, natural conditions, like hydrothermal vents only produce racemic versions of sugars and acids, meaning they are always approx. 50% left and right handed. This is fatal to forming viable biochemical assemblies.


Further, it is not possible for all of the 20+ homochiral amino acids needed for a living organism to form naturally. The only ones found have been the simpler amino acids. Also, the 4 critical nucleotide amino acids, C, G, A, T, do not form naturally, are not homochiral, nor in the right proportions.


The geo/hydrothermal vent conjecture is nonsensical. These are open systems, susceptible to currents, mineral contamination, salinity, ph, and temperature, making them a totally unacceptable environment for the precise and exact placement of elements to assemble to form life.

3 0
3 years ago
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