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user100 [1]
3 years ago
9

Carol is having a hard time attracting hummingbirds to her new feeder location. She is not sure if the reason is that the hummin

gbirds have a smaller
population right now or they just don't like the new food. She has bought some of the old food and wants to test whether that will make a difference.
Identify
Biology
1 answer:
exis [7]3 years ago
7 0

Answer:

She should hang up a feeder of the old food next to the feeder of new food to test which one they really like more.

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List the cardiovascular and cardiac features unique to the fetus and describe their role in fetal circulation; explain the fate
STatiana [176]

Cardiovascular features unique to the Fetus:

Fetal circulation is characterized by low systemic vascular resistance (SVR) with high systemic blood flow and high pulmonary vascular resistance with low pulmonary blood flow.

<h3>What is fetal circulation?</h3>

The embryonic circulatory system directs blood that needs oxygen through three shunts, or microscopic tunnels. These shunts are intended to avoid forming organs like the liver and lungs while the fetus is still in the womb.

The foramen ovale, which carries blood from the right atrium of the heart to the left atrium, and the ductus arteriosus, which takes blood from the pulmonary artery to the aorta, are the two shunts that bypass the lungs.

Through the placenta, the mother's blood supplies the fetus with nutrition and oxygen. The enhanced blood divides into three branches as it travels via the umbilical cord to the liver.

Learn more about fetal circulation with the help of the given link:

brainly.com/question/7191531

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7 0
2 years ago
Which gas in Earth's atmosphere helps living things make proteins?
hoa [83]

Answer: Nitrogen

Explanation: just trust me

7 0
3 years ago
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A Jewish couple is about to be married but they both worry about their family history. The man's uncle and the women's aunt died
Snowcat [4.5K]

Answer:

A Jewish couple is about to be married but they both worry about their family history. The man's uncle and the women's aunt died of Tay Sachs disease. Infer why the couple is hiring a genetic counselor analyze their families pedigree.

Reasons are not far-fetched, both intended couple might carry a dominant gene for Tay Sachs disease or one of them has a dominant gene for such, it is pertinent a genetic counselor analyze their family pedegree in order to avoid having such disease or passing it to their offspring.

The chances of either of the intended couple to carry such dominant gene of the disease is imminent.

Explanation:

5 0
3 years ago
Which of the following is an accurate description of an adult stem cell?
frosja888 [35]
I believe the answer is C). My reason for this is because multipotency stands for multidifferentiative potential. And this is the ability to generate progeny of quite a few distinct cell types. And adult stem cells have that ability. Hope this helps.
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The graph below represents the solar intensity measured over one day in northern Canada. What is the most likely date?
Dmitry [639]
It is important to note that the graph has 0 solar intensity for a long part of the day; around 16 hours. Only from 8 to 16 hours do we have significant sunlight.
This means that the length of day is very short during this time of the year;

The length of the day changes throughout they year; day is equal to night (12 hours each) during the solstices on March 21 and September 23 but during summer day is longer than night in the northern hemisphere; during winter it is smaller. THe smallest daylength is at December 21st (in the northern Hemisphere). This phenomenon is due to the tilt of the axis of the earth.

The correct answer is December 21; (if we talked about a place in the southern hemisphere, the answer would be March 21).
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