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Papessa [141]
3 years ago
12

How does a tumor metastasize (spread around the body) and grow tumors in other places in the body?

Biology
1 answer:
serious [3.7K]3 years ago
8 0

Cancer cells have little to no adhesins on their cell surfaces hence do not bind other cells to form proper tissues. They also have the ability to penetrate the walls of lymphatic or blood vessels.  This way they are able to move from one point in the body from where the tumor is, travel through the blood and lymph vessels to other regions to another to form secondary tumors.






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Usualmente la recesiones provocan
Over [174]

Answer:

La recesión provoca un aumento en el gasto público del gobierno para hacer que la economía flote hasta que haya estabilidad. Esta es una característica común en la economía y, como tal, ayuda a amortiguar el efecto de una recesión. Se perderán muchos empleos, aumentando así los niveles de desempleo. Por lo tanto, el gobierno tiene que gastar más para ayudar a los afectados a sobrevivir.

Explanation:

Una alta tasa de desempleo y las malas condiciones económicas llevan al gobierno a un mayor gasto durante el tiempo de recesión. El propósito es ayudar a estimular la economía y ayudarla a sobrevivir las dificultades económicas. Un ejemplo típico es el paquete de estímulo de Obama en los Estados Unidos de América en 2009 en respuesta a la gran recesión.

5 0
3 years ago
Your friend brings you rocks with a thick layer of oxidation weathering, and no other visible signs of weathering. this is a clu
Vsevolod [243]
<span>A moist environment because physical weathering processes such as oxidation take place most quickly in the presence of water. There are three types of weathering, physical, chemical, and biological. For the physical weathering, there are two main types. Freeze-thaw cycles and exfoliation. Obviously the freeze-thaw cycles require water and the exfoliation generally happens through thermal expansion and contraction which doesn't require water. But since neither of these mechanisms were observed, that doesn't indicate if the area was wet or dry. Biological weathering is caused by plants or animals breaking down rocks via chemical (acid) or mechanical (root growth) means. Life generally indicates the presence of water, but since this form of weathering wasn't observed, we still don't have enough data. Chemical weathering is caused by rain water reacting with the rocks to form new minerals and salts. There are several types such as acidic rainwater dissolving part of the rock, and oxidation. With this in mind, let's take a look at the available options. A moist environment because there is a greater density of oxygen in the atmosphere in the presence of water. * Yes, we need a moist environment, but the density of oxygen is fairly constant world wide regardless of how moist or dry the environment is. So this is a bad choice. A moist environment because physical weathering processes such as oxidation take place most quickly in the presence of water. * Water speeds up chemical weathering of all types. So this is the correct choice. A dry environment because the increased albedo of deserts encourages physical weathering processes such as oxidation. * Yes, the increased albedo of deserts does speed up spalling, but oxidation is a CHEMICAL weathering process, not a PHYSICAL one. So this is a bad choice. A dry environment because in the absence of water oxidation is the dominant weathering process. * Water speeds up oxidation quite a bit. And since the observed oxidation is thick, there's been quite a bit of weathering. So this is a bad choice.</span>
6 0
4 years ago
Please help me with these!
TEA [102]

Answer:

A. cm .5 mm5

B. cm 3.3 mm33

C. cm 5.5 mm 55

d. cm 7 mm 70

e. cm 8.3 mm 83

Explanation:

you would move the decimal point over to the right one time because centi come before mili.

5 0
3 years ago
Read 2 more answers
A group of students are reviewing information about the skeletal development in children. The students demonstrate understanding
stellarik [79]

Answer:

25 years

Explanation:

Ossification is the process of bone tissue formation. Osteoblasts are responsible for the process of ossification. It begins when the fetus is three months old and goes on till 25 years of age. Upper limbs get ossified first, followed by lower limbs, sternum and vertebrae.

There are two types of ossification processes. When bone is directly developed using the primitive connective tissue (mesenchyme) it is called as  intramembranous ossification, while in endochondral ossification cartilage is used as a precursor.

7 0
4 years ago
Which planet has a surface that is almost entirely covered in liquid water? A. Mars B. Earth C. Mercury D. Venus
qwelly [4]
This is obvious but the correct answer is B. Earth

HOPE I HELPED


6 0
3 years ago
Read 2 more answers
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