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kenny6666 [7]
3 years ago
7

Radiometric dating is used to tell the absolute age of materials by studying the decay rate of radioactive isotopes. The decay r

ates of isotopes are constant and are expressed as .
Biology
2 answers:
ASHA 777 [7]3 years ago
6 0

Answer:

Half Lifes

Please mark for brainliest!! :D Thanks!!

If you have any questions or need more information, please comment below and I'll respond asap!!

tankabanditka [31]3 years ago
5 0

Answer:

Half life

Explanation:

The radioactive dating method is usually used to date a rock or a fossil in order to determine its relative age. The unstable isotope elements decays at a certain rate, which normally remains constant and are generally expressed in terms of its half life. Half life is described as the time required by any isotope element to decay half of its original amount. This half life value varies from elements to elements. For example, the half life of Carbon-14 is approximately 5700 years. This half life of an unstable isotope element plays an important role in the radioactive dating method.

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Bacteria that are helpful in one place may be harmful in another.
kaheart [24]

Answer:

Bacteria that are helpful in one place may be harmful in another.

What information in the text supports this statement?

A Heliobacter pylori is a bacterium that causes gastritis (irritation or

inflammation of the stomach lining) and peptic ulcers, diseases which were once

thought to be caused by too much acid.

B Streptococcus salivarius appears to help prevent tooth decay in the mouth

but can be dangerous to people with weakened immune systems if it gets

outside the mouth.

Bacillus subtilis releases toxic chemicals to kill fungus, possibly including

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D Skin, which is our interface with the world, supports a large number of the

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Explanation:

3 0
3 years ago
13. What term do we use to describe the maintenance of constant conditions, such
Varvara68 [4.7K]

Answer:

C. Homeostasis

Explanation:

"Homeostasis" refers to the process of maintaining the body's equilibrium. The body tries to adjust to different stimuli in order to help it function in normal ranges. For example, when a person is exposed to a cold weather all of a sudden,<em> the person starts to shiver in order to maintain homeostasis</em>. <em>Shivering</em> is a contraction of the muscles that <em><u>allows the generation of heat</u></em>.

On the contrary, when a person is exposed to the sun during summer,<em> his body will start to sweat in order to maintain homeostasis</em>. <em>Sweating</em> allows the heat to dissipate from the body thereby lowering the body's temperature.

5 0
3 years ago
PLEASE HELP!!!!
Anna [14]

Answer:

D

Explanation:

you can't take one type of cell and create a brand new one. This gets rid of C

the only cell that increases in size is fat cells, this gets rid of A

Mitosis is for all cells, except sex cells. Daughter cells relate more to sex cells than other cells. Sex cells go through meiosis to create daughter cells. This also gets copies DNA. This gets rid of B

Basically: Mitosis is how we make new cells from the original cell (Think Zygote cell)

4 0
3 years ago
Which of the following characteristics would make an organism less likely to face extinction?
olchik [2.2K]

The correct answer is fixed migration pattern.

Extinction means termination of last member of a particular species. This can be due to various factors. The reason could be natural or human interventions. The best characteristics of an organism to be less likely to face extinction are the fixed migration pattern. Migration of that particular species in a fixed pattern will make them adapt different environment. This saves the species from natural extinction. Even if the species of a particular geographical area dies the migrated species will be alive to breed and save the species from extinction.

7 0
3 years ago
Read 2 more answers
Describe what you believe a chemical rxn is ? Use the lab to describe it in 3 or more sentences.
SVETLANKA909090 [29]

Answer: A chemical reaction is the change of a substance into a new one that has a different chemical identity. In summary, a chemical reaction is a process that converts one or more substances to another substance. Chemical reactions start with reactants and convert them into products. Most chemical reactions inside living things are regulated by enzymes, which speed up chemical reactions.A chemical reaction is a process that changes or transforms one type of chemical into another. ... Life is the result of countless reactions happening all at the same time, most often between carbon, hydrogen, nitrogen, and oxygen atoms. Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products. ... A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.

Explanation:

8 0
3 years ago
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