Which pair of elements can be used to determine the age of a fossil that is over one billion years old?
A.lead, which is radioactive, and uranium, which is stable

B.carbon, which is radioactive, and nitrogen, which is stable

C.argon, which is radioactive, and lead, which is stable

D.potassium, which is radioactive, and argon, which is stable

Answers

Answer 1
D sorry if I’m wrong
Answer 2

Answer:

A

Explanation

It should be A., lead and uranium.


Related Questions

N (populatic

T (time)

Which best explains what occurred at point X on the curve?

A. The birth rate was equal to the death rate.

B. The death rate was greater than the birth rate.

C.The rate of emigration was equal to the birth rate.

D. The rate of immigration was greater than the death rate.

Answers

Answer:

A. The birth rate was equal to the death rate.

Explanation:

The point X is the carrying capacity and this pajae could be ascribed as the plateau stage of population growth, whereby the maximum number of individuals of a particular species which the environment can support has been reached. Hence, giving a long, flat area of the logistic growth curve. At the stage marked x, growth would seize as the population hovers to attain equilibrium with the natality and fatality rate becoming equal, that is birth rate will be equal to the death rate in the population.

(Hurry, l am taking my exam) In an effort to develop the best-tasting apple, a grower eliminated all trees that produced apples considered too sweet or too sour. What type of selection is being carried out by the grower? a. Directional b. Disruptive c. Choice d. Stabilizing​

Answers

Answer: It is D. Stabalizing

Explanation:

I took the test and because the apples of both ends are being eliminated while the ones in the middle are being kept and increasing.

How would you calculate the distance of a paper airplane

Answers

Answer: uh Well, Your foot should be at the end of the starting line you prepared earlier. Once you're ready, you can throw your plane. Measure the distance the paper plane traveled (in centimeters or meters) from the starting point with the tape measure. Your lab notebook should include this data in a table. "Plane 1" will take off from this point.

Explanation:

Read above-

(07.02 LC)

Which statement identifies the cause for thermal pollution in a lake?

A boater fueling his boat from the dock on the lake

A child feeding bread to fish near the shore

Flood irrigation methods utilized by farmers

People swimming in the lake near the shore

Answers

Answer:

A

Explanation:

Thermal pollution is a type of pollution that occurs as a result of changing the temperature of the lake

the fuelling process increases the temperature of the lake

any ideas? thanks for the help!

Answers

Answer:

pretty sure its c

Explanation:

dont forget to five-star and heart! :)

it’s c like the person said^^

Nyatakan empat contoh kegunaan air sebagai pelarut semesta dalam domestik dan industri pembuatan​

Answers

Explanation:

der ar ani mankasaklam sugwa sa kalmi tuagla badrasi

1 and 2 pls!! Will give brainliest for the right answer:)

Answers

Answer:

1; b 2; a

Explanation:

Answer:

1.)c

2.)a

Explanation:

Can y’all answer quick and correctly I’m ina bad mood rn

Answers

Answer: capillaries

Explanation:

Answer:

Capillaries

Explanation: Fluid is forced out of capillaries (filtration) by blood pressure (hydrostatic pressure). As plasma is filtered, globular proteins are concentrated in the blood passing through the glomerulus, as globular proteins are too large to be filtered.

Hey, can someone please help me with this real quick

Answers

animalia, fungi , plantae , eubacteria,protista , archaebacteria

Pls answer it tnx ASAP​

Answers

Answer:

DNA Sequence: TAC-GTG-TTA-GTC-TAA-GAA-ACT

A. 1- mRNA: UAC-GUG-UUA-GUC-UAA-GAA-ACU

    2- Amino acid sequence (5'3' Frame): Tyrosine-Valine-Leucine-Valine-stop codon-Glutamic acid-Threonine (abbreviation: YVLV-ET)

B. 1- mRNA: UAC-UGU-UAG-UCU-AAG-AAA-CU

   2- Amino acid sequence (5'3' Frame): Tyrosine-Cysteine-stop codon-Serine-Lysine-Lysine (abbreviation: YC-SKK)

Explanation:

Transcription is a cellular mechanism where a specific sequence of a DNA strand is used as template to synthesize an RNA molecule, often a messenger RNA (mRNA) molecule that is subsequently utilized to create an ordered sequence of amino acids (i.e., a protein) by a mechanism referred to as translation. In RNA, uracil (U) always replaces thymine (T) bases. During translation, the mRNA is "read" according to the genetic code which associates the DNA sequence to the amino acid sequence in the polypeptide chain. For such purpose, each triplet of nucleotides or 'codon' in the mRNA specifies one aminoacid or one-stop codon (stop codons are UAA, UAG, UGA).

Help me, it's due today

Answers

Lol Wth what is going on

I will give brain to correct answer!

When guard cells are full, they bulge. This increases the
size of the gap between them and opens the hole in the
leaf.
Which object is the best model of a guard cell?

A.) Straw

B.) Garden hose

C.) Water Balloon

D.) Strainer

Answers

Answer:

water balloon maybe

Explanation:

1. Which does NOT belong to the principles of waste storage?
A Water storage
B. Physical storage c Chemical storage​

Answers

mmm i think it is b.

Which resources are renewable and which are non renewable?

a
A renewable resource is a natural resource that is replaceable through a cycle in nature or sustainable practice. These resources can be used over and over or can be replaced in one lifetime (about 100 years or less).
b
A nonrenewable resource is a natural resource that is in limited supply. These resources cannot be readily replaced in one lifetime and may run out if used faster than they can be replenished.
c
sunlight, rocks, water, glass metals, and rocks.
d
All of the above.

NO LINKS PLEASE AND THANK YOU

Answers

D.. they’re all correct I believe.
A. c would be correct but it states rocks twice which makes me think it is a trick question. B is incorrect because not all non renewable resources are naturally occurring.

which is best describes a predator animal?

Answers

the hunter. the one who stalks and kills the prey. ex: wolf is predator to rabbits (prey)

if you anwer these ill give free brainly give all stars and heart it

Answers

Answer:

8)

Potential Explosions

Radiation

Radioactive Waste

9)

1st option

10)

Nuclear Fission is not a good source of energy. This is by reason of only 0.7% of the uranium being captured. This is small even if one doesn't mention that only 40% of that 0.7% is converted into usable energy. There are also chances that the power plant could explode during conversion. All of this evidence points to the fact that Nuclear Fission and Nuclear Energy themselves should not be relied on.

11)

Sun and Stars

7)

Uranium and Plutonium

what are the effects of natural hazards?

Answers

Explanation:

effect of naqtural had aaira xhina bey m

PLSSSS HELP ASAP just try to answer just the matching at least THANK YOU.​

Answers

Answer:

Matching

1. Canning is d. Stored in airtight containers

2. Shrouding is f. Wrap in cloth

3. Dehydration is e. Reduced moisture content

4. Viscera is b. Internal organs

5. Sweetbreads is a. Thymus and pancreatic glands

6. Food additive is c. Added before packing

Completion

Vitamins A, D, E, and K are fat-soluble.Minerals that assist in fluid regulation are Sodium, Chloride and  Potassium.Meat from animals that have been slaughtered as prescribed by Jewish ritual is called Shechita.The method of precooking food, removing moisture, and then freezing is known as dehydro-freezing.

People who live in tundra, will get more vitamin D. True or False.
People who get more vitamin D and more sunlight, will they have more darker skin or lighter skin?

Answers

False

Darker skin

Good luck

I will give brain to the correct answer!

Which statement best explains how sewage systems help fight the spread of disease?

A. They carry antibiotics that kill pathogens

B. They carry human waste to treatment facilities away from cities

C. They kill animals that spread pathogenic bacteria

D. They add chlorine to drinking water before it is transported to homes.​

Answers

B. They carry human waste to treatment facilities away from cities

B. They carry juman waste to treatment facilities

A narrow mouth frogs eggs do not hatch into tadpoles instead they hatch directly into tiny frogs what type of habitat would you expect the narrow mouth frog to live? In explain you answer I need help please help it's science

Answers

Answer:

The environment where narrow-mouthed frogs live is very dry. ... Tadpoles usually live in water so this environment would not be beneficial for these frogs.

hope it will help you

 please answer quick and correctly

The rest of teh choices for number 3 is blood and carbon dioxide and for 6 the choices are to transport gases to protect internal organs to control movement or to transport fats

Answers

Answer:

Yes, you are right for both.

I need help on this 1 question.

Answers

A it aaaaaaaaaaaaaaaaa

Why human beings are complex organism ?

Answers

Answer:

Human is a complex organisms because humans are made up of trillion of cell and a lot of system and organ . Some of the major systems are blood circulatory systems, the skeletal system, the digestive system, the nervous system and the respiratory system.

list four different cells found in man and give one function of each.​

Answers

Answer:

Epithelial Cells. These cells are tightly attached to one another.

Nerve Cells. These cells are specialized for communication.

Muscle Cells. These cells are specialized for contraction.

Connective Tissue Cells.

Explanation:

I only could do the important 4 sorry but I hope this helps you sorry if it doesn’t help you

The primary purpose of which human organ system is to produce hormones that regulate body functions

Answers

The endocrine system.

This system includes the pituitary gland, thyroid gland, parathyroid gland, adrenal glands, tested/ovaries, and the pancreas.

Help on any of these would be very much appreciated

1. Circle the clade that includes both
amphibians and snakes.

2. What is something that all organisms in that
clade have in common?

3. What kingdom does this cladogram fit into?

4. Who are the lizards most closely related to
on this cladogram?

5. On the cladogram, star the organism that
has wings as a derived character.​

Answers

Based on the given cladogram:

the clade that includes both amphibians and snakes is; turtles, snakes, lizard and crocodileall the organisms lay eggsthe cladogram belongs to kingdom animalializards are most closely related to snakesbirds have wings as a derived character

What is a cladogram?

A cladogram is a treelike diagram used to shoe relationship between organisms.

A cladogram is shown above.

Based on the given cladogram;

Turtles, snakes, lizard and crocodile are the amphibians and reptiles in the same cladeThe amphibians and reptiles reproduce by laying eggsthe cladogram contains organisms belonging to the kingdom animalializards and snakes are both reptiles, thus, are most closely-relatedbirds belong to the class aves and possess wings as a derived character

Therefore, the cladogram is of organisms that belong to kingdom animalia.

Learn more about cladograms at: https://brainly.com/question/1477703

Determine whether each is a source of bad ozone or not.
car exhaust
industrial emissions
transpiration of plants
solvent vapors
acid rain

Answers

car exhaust, industrial emissions and solvent vapors are all sources of bad ozone layers because they unleash pollutants into the atmosphere which in turn harm the ozone layer.

1Which waste needs to be sorted and which can be disposed of in the general bin? 2How do you know which wastes can be recycled and sorted? 3Provide arguments to show that we save energy by making items from recycled materials.​

Answers

Answer:

Waste which needs to be sorted are: Plastic, paper, and alminium. And the ones can be disposed can be any other items such as food, sweet wrappers, plastic wrapping, and broken glass.

The waste bags are opened and the waste is put onto a conveyor belt and moved into a processing area. First, the waste will go into a pre-sort area, where any items that can't be recycled are removed, and then the materials move into an area where they can be sorted automatically by machines, or manually by workers.

As most people know, recycling can reduce pollution, animal harm, and energy because we won't need as much material to be making the same thing over and over again so in general, recycling is the best way to save energy and for the sake of the planets environment.

GOOD LUCK!!! I HOPE THIS HELPS!!!

Why do you think Leeuwenhoek named the cells he observed "animalcules"

Answers

Answer:

Using single-lensed microscopes of his own design and make, Van Leeuwenhoek was the first to observe and to experiment with microbes, which he originally referred to as dierkens, diertgens or diertjes (Dutch for "small animals" [translated into English as animalcules, from Latin animalculum = "tiny animal"]).

Leeuwenhoek named the cells he observed originally as dierkens, which is the Dutch word for small animals, and translated to English as animalcules.

Hope it helps :)

Though I may be wrong :( ...

Have a great day!

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