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Darya [45]
3 years ago
11

Sounds with frequencies higher than the range of the human ear are called

Biology
1 answer:
Juli2301 [7.4K]3 years ago
4 0

Answer:

the answer is Ultrasound

Explanation:

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Describe the differnt phrases and changes of female reproductive system during a menstruation cycle
GenaCL600 [577]
Basically we can divide the whole cycle into 6 phrase. menstruation, repair phrase, ovulation, receptive phrase, and pre menstrual phrase, all in this order.
usually a cycle takes around 28 days, but it can sometimes be longer or shorter depending on different women.
for around the first 5 days (again, it's not exact days) it's menstruation, uterus lining is shed out from the vagina. this only occurs if fertilisation and implantation does not take place.
then for the next few days, it's the repair phrase, oestrogen helps repair the lining of uterus, to thicken it up, to prepare for fertilisation and implantation, a place for the fetus to develope.
next 3 days will be ovulation, where the ovary will release one mature egg (but sometimes 2 or none) into the oviduct, the egg can only survive for a few days so if fertilisation doesn't occur during this phrase, menstruation will occur that cycle.
next will be receptive phrase, where the lining keeps on thickening, and the thickness is maintained by progesterone, another female hormone.
at last it's the pre menstrual phrase, lining will start to degenerate unless implantation ocured.
hope this helps
7 0
3 years ago
A *blank* is an area occupied and defended by an organism or population
Arisa [49]

Answer:

territory

Explanation:

5 0
3 years ago
Read 2 more answers
Cuántas cifras significativas tiene la siguiente cifra 9000?
xxMikexx [17]
<h2>Answer: Solo tiene 1</h2>

Explanation:

5 0
3 years ago
Most nonrenewable energy resources are burned for us to use their energy. Which of the following is a nonrenewable energy source
IrinaK [193]

Answer:

The correct answer is - A) nuclear.

Explanation:

Most of the non-renewable sources of energy are fossil fuels that are formed by the thermal decomposition of dead organic matter for million years and are converted to lighter hydrocarbons that contain high electrostatic potential energy.

Burning is the process that breaks the hydrocarbons into water vapor and CO2 with high amount of energy. Coal, natural gas and biofuels all three are fossil fuels and nuclear products are not fossil fuel but radioactive elements.

8 0
3 years ago
_____________contents empty into the small intestine and must quickly be neutralized to prevent damage to the intestinal wall. U
Sonbull [250]

Answer:

Pancreatic juice, NaHCO₃.

Explanation:

The buffers are the chemical solution which neutralizes the acidic effect and the human body also produces the biological buffers which help maintain the pH.

The pancreatic juice secreted by the pancreas gets drained into the duodenum of the small intestine and neutralizes the effect of the acidic content in the stomach bolus.  The pancreatic juice contains the sodium bicarbonate which neutralises the effect of the HCl.

Thus, Pancreatic juice, NaHCO₃ is the correct answer.

6 0
4 years ago
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