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3 years ago

Every 24 hours, the Earth completes two rotations on its axis. True or False

Biology

2 answers:

timama [110]3 years ago

6 0

False each day is 24 hours

alina1380 [7]3 years ago

4 0

False, By definition, the Earth’s rotation is the amount of time that it takes to rotate once on its axis. The earth rotates around its axis once every 24 hours

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What body systems work with fighting a sickness

Leviafan [203]

It's the Immune system!
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2 years ago

Several studies showed that after drinking an energy drinkafter drinking an energy drink, subjects had increased performanceinc

Nata [24]

The answer is E; Self-interest study. This is due to the fact that the financier of the research, the beverage company, has vested interests in the research and will therefore be intuitively biased for the results to favour the sales of the beverage.

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3 years ago

When a horse and a donkey have an offspring, it is called a mule--a hybrid that cannot reproduce itself. Why are horses and donk

RUDIKE [14]

Answer:

Horses and donkeys are two different species but belong to the same family Equidae and the genus Equus. They both have different numbers of chromosomes.

Although they look quite similar in appearance, there are many dissimilarities.

The physical differences between horses and donkeys include:

Donkeys backs are flatter than horses.

Donkeys have smaller hoofs than horses.

Donkeys have longer and thicker ears than horses.

Horses tend to have a long face than Donkeys.

Horses have six vertebrates, while donkeys have only five.

Tails of horses and donkey differ. Horses have long tails, whereas donkey’s tail looks like a cow’s tail.

On the genetic level, the total number of chromosomes in the horse is 64 and donkey have 62 number of chromosomes. Mule is a hybrid of a female horse and a male donkey. Hinny is a hybrid of a female donkey and a male horse. Both the offspring (hybrid offspring) produced by donkeys and horses are infertile, sterile, cannot have its own offspring and both have 31 pairs of chromosomes each.

If the produced offspring is fertile then the animals are of the same species and if the produced offspring is sterile then they are of different species. Because of this, both horses and donkeys are considered as a separate species. A species is generally defined as a group of organisms, which are capable of interbreeding and creating viable offspring. In this case, mule and the hinny are not really a new species and are produced by two different species.

4 0

3 years ago

Read 2 more answers

The ________ surrounds the third ventricle and its two most important structures are the _______.

rosijanka [135]

Covered by the two cerebral hemispheres, the diencephalon is the structure of the central nervous system that surrounds the third ventricle. It is composed of several other structures. The most important of them are the Thalamus, which plays a very important role in movements and emotions; and the Hypothalamus, which provides functions including thermoregulation, appetite and regulation of the sleep-wake cycle.

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3 years ago

What is virtual water? Why does it matter? - How can you reduce your virtual water impact?

nika2105 [10]

Answer: What is virtual water?

Virtual water is the volume of water used to produce consumer products. The total volume of water refers to all of the water used in the production of a product. For example, the total volume of water used in a food product would include the water used in the agricultural process, but also the water used in packaging and shipping. Virtual water is essentially all of the “hidden” water behind a product. Every product we consume contains virtual water.

Why should we care?

The majority of the public is unaware of just how much water we consume in our daily lives. It is easy to over-consume, especially when we don’t know just how much we are actually consuming. Without understanding our consumption, it is unlikely that we will succeed in reducing our virtual water footprint. Communities and countries around the world face water issues of scarcity, sustainability, sanitation and accessibility.

Food is the main source of virtual water consumption. In fact, the average American consumes about 33,000 glasses of virtual water every day. These numbers are only expected to increase with increasing populations. Understanding virtual water is a key consideration for sustainable water management.

Explanation: Water covers 70.9 percent of the planet’s surface.

97 per cent of the that water is salt water.

Around the world, 2.1 billion people still lack access to safe water.

Water use is growing at twice the rate of population growth. Unless this trend is reversed and we come up with a way to share water fairly and sustainably throughout the planet, two-thirds of the global population will face water “stress” by 2025

In the USA, the average water footprint per year per capita is as much as the water needed to fill an Olympic swimming pool, an average of 7,786 litres of water per person per day.

In China, the average water footprint is 2,934 litres of water per person per day.

In the Netherlands, 95 per cent of the water footprint of consumption lies somewhere else in the world (due to the amount of imported goods consumed), whereas in India and Paraguay only 3 per cent of the national water footprint of consumption is external.

It requires around 1500 litres of water to produce 1 kilogram of wheat, and a huge 10 times more to produce the same amount of beef.

The water footprint of a cup of coffee is around 140 litres, a cup of tea only around 34 litres.

Hope i helped

6 0

3 years ago