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ioda
3 years ago
8

Someone please do this for me, due soon. I'll give brainliest, thanks and 5 stars.

Biology
1 answer:
slava [35]3 years ago
4 0

Answer:

Yes.

Explanation:

Yes, a tree is falling over in a forest make a sound because both the tree and ground are hard surfaces which can produces sound by contact physically with each other. For testing this hypothesis, we have to take a tree and cut that tree. when the tree falls on the ground it will definitely produces sounds by contact physically with the ground when falls with a large force.

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The __________ is shed during each menstruation and is then regenerated by the __________.
laila [671]

Answer:

The endometrial lining is shed during menstruation and is then regenerated by the hormone estrogen.

Explanation:

The menstrual cycle can be described in terms of:

1. <u>OVARIAN cycle</u>: divided into

-Follicular phase  of variable length lasting between 7 and 21 days.

-Ovulation  

-Luteal phase  which is fairly constant and lasts between 12 and 16 days.

The most common cycle length is 28 days and this occurs in 15% of women in their reproductive age .

The duration of flow is between 2-6 days.  

2. <u>ENDOMETRIAL cycle</u>: divided into

-Proliferative phase where there is increase in growth of the functional layer and the endometrial glands under the influence of oestrogen.  

-Secretory phase where endometrial changes are influenced by progesterone activity.

The endometrium is made up of the basal layer and the functional layer.

The basal layer remains intact throughout the cycle while the functional layer is shed during each menstruation.

5 0
3 years ago
What happens to RNA polymerase II after it has completed transcription of a gene? a. It begins transcribing the next gene on the
Over [174]

The correct answer is: b. It is free to bind to another promoter and begin transcription

Transcription is the first step of gene expression in which DNA molecule is copied (transcribed) into RNA (mRNA) by RNA polymerase. The process of transcription is divided into three phases:

1. Initiation

• RNA polymerase with transcriptional factors bind to gene promoter  

• RNA polymerase unwinds DNA double helix (transcription bubble is formed)

2. Elongation

• RNA polymerases adds nucleotides complementary to DNA  

3. Termination

• RNA polymerase gets to stop codon (transcribes a sequence of DNA known as a terminator)

• Formed complementary RNA strand is released from DNA-RNA complex.

RNA polymerase is also released and can transcribe some other gene by binding to its promotor. RNA polymerase will transcribe just the genes whose products are needed at a particular moment.

7 0
3 years ago
Why is there a minimum mass for an object to become a star
Furkat [3]

Answer:

it doesn't hold enough anything to actually become a star

Explanation:

smaller objects cannot hold planets in orbit. smaller objects cannot generate enough pressure to start hydrogen fusion

hope this helps :)

4 0
3 years ago
Read 2 more answers
Which of the stages of the water cycle were you able to observe in your model
natta225 [31]
The water cycle<span> or hydrologic is a continuous </span>cycle<span>where </span>water<span> evaporates, travels into the air and becomes part of a cloud, falls down to earth as precipitation, and then evaporates again. ... As clouds move up and over mountains, the </span>water<span> vapor condenses to form precipitation and freezes</span>
7 0
4 years ago
Which substance is considered a building block for all living things?
adelina 88 [10]
DNA is considered the building blocks of life.
3 0
4 years ago
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