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White raven [17]
3 years ago
5

PLEASE HELP ME WITH THIS QUESTION

Biology
2 answers:
ELEN [110]3 years ago
4 0
Its internal mainly because none of the other words fit and because what happens with the rumbling and vomitting its INTERNAL
hope this helped plz mark brainliest if u can
lora16 [44]3 years ago
4 0
The answer is A. Internal Hoped this helped feel free to as anymore questions here at brainly.com
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Why is the menstrual cycle an important adaptation for reproduction in humans?
raketka [301]
The menstrual cycle is practically controlled by a system of hormones that is necessary for reproduction, and when the hormone reaches a heightened level, something called estradiol is made, then the stimulation of the ovaries by a luteinizing hormone.

Once that hormone begins developing, the ovaries make an egg that quickly becomes an ovum. The ovary then releases one egg or two during ovulation. The endometrium (the part that sheds its own cells for the menstruation) peaks after ovulation and changes the lining of the uterus to prepare for the hectic process of pregnancy and child labor. 

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5 0
3 years ago
Plants in hot environments like deserts open their stomata at night because they are adapted to
stepan [7]

Answer:

To reduce water loss.

Explanation:

Keeping the stomata closed during the day, helps reduce water loss when dry, hot wind blows across it.

3 0
1 year ago
Xavier drew a diagram to compare the roles of oxygen and hydrogen in photosynthesis.
Elan Coil [88]

Answer:

Is released into the air through stomata

Explanation:

Oxygen and hydrogen both exists as gaseous molecules in the atmosphere. However, one of them (oxygen) is a product of photosynthesis while the other (hydrogen) is one of the constituents of the molecule that starts the process of photosynthesis.

According to this question, the X used in the attached diagram is the role of oxygen in photosynthesis. Oxygen is released as a product of photosynthesis and goes out of the plant into the air via the STOMATA. Hence, the gas released into the air via stomata is OXYGEN.

4 0
3 years ago
As far as Alzheimer's researchers know, the primary cause of Alzheimer's disease is:
xxMikexx [17]

Answer:

a. deterioration of neurons that produce the neurotransmitter acetylcholine.

Explanation:

Alzheimer's disease -  

It is a disease associated with memory , it is a type of dementia .

The initial stages of the disease is the remember new things , the day to day task becomes very difficult with time .

During this disease the neurons get deteriorated day by day , which are responsible to produce the acetylcholine .

Hence , the correct statement about Alzheimer's disease is ( a ) .

4 0
2 years ago
Explain the effect salinity and temperature have on water density.
hichkok12 [17]
Increasing salinity<span> also increases the </span>density<span> of sea </span>water<span>. Less dense </span>water<span> floats on top of more dense </span>water<span>. Given two layers of </span>water<span> with the same </span>salinity<span>, the warmer </span>water<span> will float on top of the colder </span>water<span>. ... </span>Temperature<span> has a greater </span>effect<span> on the </span>density<span> of </span>water<span> than </span>salinity<span> does</span>
3 0
2 years ago
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