If the average student's arms can extend about 1.3m how many students would have to join hands to form a human chain around a giant sequoia ? the sequoia is 30 m around and grow to about 91m tall

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Answers

Answer 1

Answer: If the tree is 30 m around, then shouldn't we take the lengths of the arms and divide it into the perimeter of the tree? So what we do is take 30/1.3 = about 23. So it would take about 23 children to stretch their arms around the tree.

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Why is it relatively rare to observe a solar eclipse
If a tube containing a 10% sugar solution is covered at one end by a semipermeable membrane and isplaced in a beaker containing a 5% sugar solution, what will most likely happen to the water?A. Water will only enter the tube.B. Water will only leave the tube,C. There will be no water movement in the tube.D. Less water will enter the tube than leave the tube.
Based on these descriptions, which man is impotent
Which domain consists of single-celled organisms, some of which can cause illnesses treated with antibiotics? A. Archaea B. Bacteria C. Eukarya
Animals and plants can cause Biological weathering. What organism lives on rocks and causes it to break down?

What is the main function of the circulatory system in multicellular organisms?A.
to bring oxygen into the lung

B.
to put carbon dioxide into all blood vessels

C.
to expel waste products from the body

D.
to transport materials throughout the body

Answers

The answer here is D because it covers the other options namely A and C while B is not really true.
Multi cellular organisms are made up of billions of cells each specialized to a unique role and these cells are organized into structural and functional units such as tissues and organs.
For each cell and organ to function optimally, it requires oxygen and nutrients and needs carbon dioxide and metabolic waste taken away in a continuous, never ending process.
A mechanism is needed to accomplish the important function of transporting the relevant materials to and from the cell. The circulatory system fits this bill splendidly. It is a specialized organ system which allows blood and lymph to flow through the entire body carrying nutrients such as glucose, amino acids and electrolytes as well as oxygen to each cell, at the same time carting away carbon dioxide and all sorts of metabolic waste over to excretory organs to be expelled from the body.

oh yeah oh yeah oh yeah

What is a kilocalories

Answers

A unit of Food energy

Can u help with tee rock part and plz asap I really need help

Answers

half-life = time in which half of material is lost

1/4 = 1/2 x 1/2 so 2 half lives have gone by if only 1/4 of it is left.

age of rock = 2 x half life = 2x1.3 = 2.6 billion years.

Here, Left amount of Uranium = 1/4

So, Number of Half lives gone by = 1/2 / 1/4 = 2

Life after 1 half-life = 1.3 billion years
So, With 2 half-lives, it would be: 1.3 * 2 = 2.6 billion years

In short, The Rock is 2.6 billion Years Old

Hope this helps!

Do predators really kill only old and sick prey

Answers

redatory animal do target the older and/or weaker prey purely because they understand those animals would be easier to take down. But on the other hand, predators do not exclusively hunt older or sick prey. They usually just single one animal out and chase.

Yes but they hunt other animals as well. They need to eat.

20 points easy questionduring which era did amphibians appear?
Mesozoic
Cenozoic
Paleozoic
Precambrian

Answers

I believe it was the Paleozoic period

Hope this helped!

~Just a girl in love with Shawn Mendes

The correct answer is Paleozoic.
I have a fun fact for you:
Paleozoic is also referred to as the age of amphibians!

The transfer of genes from one population to another

Answers

The transfer of genes from one population to another is called gene flow . Gene flow can occur through a variety of mechanisms, including:

Migration: When individuals move from one population to another, they bring their genes with them.

Interbreeding When individuals from different populations mate, their offspring inherit genes from both parents.

Horizontal gene transfer This is a process by which bacteria can exchange genes with each other, even if they are not closely related.

Gene flow is an important factor in evolution, as it can introduce new genes into a population and increase genetic diversity. This can help the population to adapt to new environmental conditions and to resist diseases.

Here are some examples of gene flow:

Monarch butterflies Monarch butterflies migrate from North America to Mexico each year. When they mate in Mexico, their offspring inherit genes from both parents. This gene flow helps to maintain the genetic diversity of the monarch population.

Gene flow is a complex phenomenon that can be affected by a variety of factors, including the distance between populations, the rate of migration, and the presence of barriers to migration.

To know more about genes

brainly.com/question/31121266

#SPJ12

Answer:

gene flow

Explanation:

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