BIOLOGY HIGH SCHOOL

What do holes in volcanic rock illustrate about the conditions in which it was formed??

Answers

Answer 1
Answer: Some magma, which is called lava when it reaches the earth’s surface, is shot high into the air from pressure and gasses that accompany many eruptions. The air cools the magma and hardens it while it still contains the gasses that were present in the magma as bubbles. The resulting rock is filled with an infinity of holes which were once gas bubbles in the airborne lava.
Explanation:

The most straightforward thanks to making a case for this can be as a result of some volcanic rocks (pumice specifically) are actually rock foam. like several artificial foams, it's created once an extremely viscous soften fluid at air mass is violently depressurised and cold, avoiding the liquid kind to settle in a very compact condition. The holes, as in any foam or sponge, are empty as a result of on the first liquid kind they were full of gasses. once an activity, those gasses left the rock and therefore the cavities are full of air.
Answer 2
Answer: Some magma, which is called lava when it reaches the earth’s surface, is shot high into the air from pressure and gasses that accompany many eruptions. The air cools the magma and hardens it while it still contains the gasses that were present in the magma as bubbles. The resulting rock is filled with an infinity of holes which were once gas bubbles in the airborne lava.

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The table below shows the number of amino acid differences seen in several species compared to humans. Using the data in the table as an indicator of relatedness betweenspecies, indicate the species the most closely related to humans.
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What word is used describe knowledge about the universe and the method of obtaining that knowledge

Answers

I believe the answer would be science

What radiation is used in hospitals and how does it cause a problem for staff/workers?

Answers

Radiation is used for X-rays, MRIS, any type of cancer killing. 
Too much of radiation can be a dangerous thing... you could end up dying from a lot of exposure. 
The radiation used is gamma radiation. It causes a problem for staff/workers as it's highly penetrating meaning it can penetrate (go through) almost anything . The staff/workers will have a lot of exposure to this gamma radiation and too much exposure allows the radiation to kill cells, even the useful ones.

Explain the differences between the three ways of heat transfer, conduction, convection, and radiation.​

Answers

Answer:

The differences between these three ways of heat transfer are that conduction is the transfer of thermal energy through direct contact, convention is the transfer of thermal energy through the movement of liquid or gas, and radiation is the transfer of thermal energy through thermal emission. As you can see, each way of heat transfer has a different way of moving through objects.

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Fish and amphibians commonly conduct fertilization.

Answers

Fish and amphibians commonly conduct fertilization externally. External fertilization occurs when the female releases the eggs into the environment and then the male releases sperm on top of the eggs.The eggs are then fertilized. Internal fertilization occurs when fertilization happens inside the female's body. After fertilization, the female either bears live young or lays eggs which hatch. Both of these processes take place after a period of incubation either internally or externally. Eggs which are externally fertilized do not have a hard external protective covering or shell. 

One genetic factor that can influence your personality is __________.a. support
b. love
c. security
d. aptitude

Answers

One genetic factor that can influence your personality is aptitude. Aptitude is a natural ability to do something.

Answer:

D. aptitude

Explanation:

just took the practice for the lesson on edg2020

Do you predict that salt will be able to move across the membrane?1. Yes, because NaCl is small
2. Yes, because NaCl is ionic
3. No, because NaCl is large
4. No, because NaCl is ionic

Answers

Answer: The correct answer is

No, because NaCl is Ionic

Explanation:

NaCl can pass through the cell membrane because it is Ionic and separates into Ionic components Na+ Cl+.

Cell membrane are phospholipids bilayers and have hydrophobic tails and face inside of the cells . The fatty acids tails are non polar and only non polar substances can pass through it but salts is a polar molecules because it is an ion and cannot pass.
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