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rjkz [21]
3 years ago
12

During which geologic timespan below could in interaction between humans and mammoths have occurred?

Biology
1 answer:
kotykmax [81]3 years ago
6 0

Answer:

Pleistocene Epoch

Explanation:

Modern humans coexisted with woolly mammoths during the Upper Palaeolithic period when the humans entered Europe from Africa between 30,000 and 40,000 years ago. Before this, Neanderthals had coexisted with mammoths during the Middle Palaeolithic, and already used mammoth bones for toolmaking and building materials. Woolly mammoths were very important to ice-age humans, and human survival may have depended on the mammoth in some areas.

The Pennsylvania period, Precambrian  period, and the Palezoic Era all existed millions of years before mammoths and humans.

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High concentrations of solutes such as sugar or salt results in plasmolysis of cells due to the onset of which phenomenon. Selec
malfutka [58]

Answer:

The correct answer will be option-B

Explanation:

Three types of solution are formed based on the concentration of the solute which are:

1. High solute concentration- Hypertonic solution

2. Low solute concentration- Hypotonic solution

3. Equal solute concentration- Isotonic solution

When a cell contains a high amount of solute concentration and low concentration of water then it results in the generation of very high osmotic pressure.

If a cell is placed in an aquatic medium then due to high osmotic potential, the water will enter the cell which will lead to the rupture of the cell membrane. This process of rupture of the cell membrane is known as the plasmolysis.

Since the cell rupture due to the generation of very high osmotic potential, therefore, is the correct answer.

4 0
3 years ago
Which question is based on these observations apex answers?
Korolek [52]
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3 years ago
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Gre4nikov [31]

Answer:

Cell membrane

Explanation:

The cell membrane is a flexible and permeable skin surrounding a cell.

8 0
3 years ago
Which best describes accuracy
aleksley [76]
Accuracy describes how well a measuring instrument determines the variable it is measuring. How close the value is to real value. The level of accuracy of measuring tool determines the detail to which it can measure. In order to be accurate in their work scientists need first select a measuring instrument that allows an appropriate measure of accuracy and then to calibrate it. Calibrating an instrument involves measuring already known quantities to check how accurately it is. In the laboratory accuracy of a test is determined when possible comparing results from the test in question with results geenrated from an established reference method.
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Answer:

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