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2 years ago

Q16.A needle can be made to "float" on the surface tension of water. What causes this surface tension to form?

Biology

1 answer:

Sunny_sXe [5.5K]2 years ago

6 0

Answer:

Explanation:

Water has surface tension due to cohesion that allows it to 'stick' together. This cohesion is created by the fact that water is polar and has unequal distribution of charges. The oxygen becomes slightly negative as it is surrounded by positive hydrogen. In turn, the hyrdogen becomes slightly positive.

This means that the hydrogen molecule is temporarily attracted to the oxygen of another molecule. This causes surface tension and allows light objects to float on top of it

Hope this helps!

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In all animals, the largest percentage of the body's fluids are located in the:

REY [17]

I think it would be in the cells

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3 years ago

What are the classification levels of humans for order, suborder, family, tribe, genus, and species? Group of answer choices Mam

Finger [1]

Answer: Human classification levels for order, suborder, family, tribe, genus and species are;

Primates, Primates, Haplorhini, Hominidae, Hominini, Homo, and sapiens , Hominidae, Hominini, Homo, and sapiens

Explanation:

Human taxonomy is the systematic classification of humans.

The order is primates include placenta animals including humans, that have good eyesight, flexible hands and feet, well developed brain and they include man, lemurs, apes e.t.c.

Suborder Haplorhini have a plate which cause a separation between the temporal fossa and eye socket.

Family Hominidae include group of animals that have well developed forearms and flattened digits nails.

Humans are called homo sapiens which means wise man. It is a Latin word...

Homo means man and sapiens means wise.

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3 years ago

Is Solid waste point source pollution or non point source pollution?

Yanka [14]

Answer:

Nonpoint-source pollution is the opposite of point-source pollution, with pollutants released in a wide area. As an example, picture a city street during a thunderstorm. As rainwater flows over asphalt, it washes away drops of oil that leaked from car engines, particles of tire rubber, dog waste, and trash. The runoff goes into a storm sewer and ends up in a nearby river. Runoff is a major cause of nonpoint-source pollution. It is a big problem in cities because of all the hard surfaces, including streets and roofs. The amount of pollutants washed from a single city block might be small, but when you add up the miles and miles of pavement in a big city you get a big problem.

In rural areas, runoff can wash sediment from the roads in a logged-over forest tract. It can also carry acid from abandoned mines and flush pesticides and fertilizer from farm fields. All of this pollution is likely to wind up in streams, rivers, and lakes.

Airborne pollutants are major contributors to acid rain. It forms in the atmosphere when sulfur dioxide and nitrogen oxides combine with water. Because acid rain results from the long-range movement of those pollutants from many factories and power plants, it is considered nonpoint-source pollution.

Explanation:

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3 years ago

Read 2 more answers

to function on their own unicellular organisms must do what? A) make tissues B) perform a specialized task C) work with other ce

KiRa [710]

Answer:

d) do all jobs for survival

Explanation:

A single cell perform all its activity on its own.

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3 years ago

Where do your inherited genes come from?<br> alleles<br> parents<br> gametes<br> offspring

kenny6666 [7]

Offspring hope this helps

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3 years ago