What is "Radioactive Dating"?

A. A method of determining the age of a fossil that estimates the age of the organism at its death

B. A method of determining the age of a fossil based on the amount of certain isotopes that remain in a fossil or rock

C. A method of determining the age of a fossil that estimates how closely related various fossilized organisms were

D. A method of determining the age of fossil based on a comparison to the age of other similar fossils

Answers

Answer 1

Answer:

Unlike relative dating methods, absolute dating methods provide chronological estimates of the age of certain geological materials associated with fossils, and even direct age measurements of the fossil material itself.


Related Questions

Beth broke her ankle bone. The doctor gives her a
brochure on foods she can eat to help restore the
health of her bones. Which element will help Beth
strengthen the bone?

Answers

Answer:

Calcium

Explanation:

Calcium is the healthy bone mineral. About 99% of the calcium in the body is stored in the bones and teeth. It's the mineral that makes them hard and strong. The remaining 1% is needed for many activities that help keep the body functioning normally.

Answer:

Phosphorus will strengthen her bones.

Explanation:

There are a wide number of dietary minerals that are involved in the strengthening of bones. But among all of them, calcium and phosphorus are the key minerals that play an active role in providing strength to the bones. Phosphorus keeps the bones healthy and strong. It also helps in the growth of bones.

Low amounts of phosphorus can lead to thinning of the bones, a disease termed as osteoporosis.

Please list answers below

Answers

False and clean your computer

Which of the following would ATP NOT be used for as energy?
A. Osmosis
B. Healing a cut
C. Keeping warm
D. Push ups

Answers

Answer:

[tex]\boxed {\boxed {\sf A. \ Osmosis}}[/tex]

Explanation:

ATP or adenosine triphosphate is used as energy in all living organisms. It is required for many processes to keep an organism alive. We are looking for the process that does not require ATP.

A. Osmosis

Osmosis is the diffusion of water across a selectively permeable membrane. It is a type of passive transport, so there is no energy expenditure. ATP is not used, but we can check the other answer choices.

B. Healing a cut

Healing a cut requires transporting substances to the cut, inflammatory responses, and cell division to repair the cut. This does require ATP.

C. Keeping warm

To stay warm the body's blood vessels near the surface constrict so less heat is lost and the sweat glands are inactivated. This requires ATP.

D. Push ups

Push ups require many different muscles throughout the body and exercise requires lots of ATP.

The correct answer is Choice A. Osmosis.

An organism and its taxonomic key are shown below.

An image of an organism is shown. The organism has two body regions with four legs on each side. 3 mm is written next to the image of the organism. There are no claw-like pinchers.


Taxonomic Key
Step Characteristic Organism
1 8 legs Go to step 2.
More than 8 legs Go to step 3.
2 One body region Go to step 4.
Two body regions Go to step 5.
3 One pair of legs on each body segment Centipede
Two pairs of legs on each body segment Millipede
4 Less than 1 millimeter long Mite
More than 1 millimeter long Tick
5 Claw-like pinchers Go to step 6.
No claw-like pinchers Spider
6 Long tail with a stinger Scorpion
No tail or stinger Pseudoscorpion

Which organism is shown in the image?
Millipede
Spider
Scorpion
Tick

Answers

spider has no tail and has no stinger

Answer: its a spider

Explanation: cause it case a legs and it has two body regions

11
Select the correct answer.
Which part of an atom has most of its mass?
A.
electrons
B.
neutrons
Oc.
nucleus
OD.
protons
Reset

Answers

The part of an atom that has the most mass is Electrons.

Answer:

C NUCLEUS

Most of an atom's mass is in the nucleus—a small, dense area at the center of every atom, composed of nucleons. Nucleons include protons and neutrons. All the positive charge of an atom is contained in the nucleus, and originates from the protons.

Question 7 (True False Worth 1 points) (01.02 LC) The results of an experiment can be validated through replication O True 0 False​

Answers

Answer:

Im pretty sure its true ill coment latter to tell youif it is or not

Explanation:

Answer:

true

Explanation:

The results of an experiment can in fact be validated through replication

Ans:using a filament of spirogyra in a laboratory Demonstrate how plasmolysi wil occur​

Answers

Answer:

plasmolysis is the shrinkage of protoplast from the cell wall under the influence of a hypertonic solution.this can be observed by placing the fresh filament of spirogyra in a 10% solution of common salt.the cell undergoes exomosis.

I hope this helps

Plz answer this. I miss typed it as advanced placement.​

Answers

Answer:

option 1

Explanation:

Answer:

a and R

are correct

Explanation:

Biomass is a :
(a) Dry weight of living organism
(b) Fresh weight of living organism
(c) Dry weight of dead organism
(d) Fresh weight of dead organism


(1) only a (2) a,b (3) c,d (4) only c

Answers

Answer: 1. only A

Explanation: bio means living

Answer:

(a) Dry weight of living organism

hope this help you

for fun

if you had to choose what animal would you be^-^

Answers

Answer:

Husky. Why not?

Explanation:

Which type of graph could be easily converted into a pie chart?

Answers

Answer:

bar graph can be easily converted to pie chart

In the rock cycle, if any type of rock is broken down into little pieces, it changes into ______ rock.

Answers

Answer:

small rock

Explanation:

hope it's helpful

Although ____________ is the most efficient and sometimes least-costly way to cut trees, it can also harm an ecosystem by causing increased erosion, sediment pollution of nearby waterways, and losses in biodiversity.

Answers

Answer:

Clear cutting.

Explanation:

Clear cutting is the most efficient and less costly way to cut down the trees. This practice of cutting trees can harm an ecosystem by increasing erosion, sediment pollution of waterways, and losses in biodiversity that lives there before the cutting of trees. This clear cutting destroy the habitat of thousand of organisms and erosion of the productive layer of soil occurs that is depleted due to heavy rainfall and wind.

what is reflex action​

Answers

A action that has came in result of an event

It is basically an involuntary response which occurrs immediately. It’s a sudden responce or act.
Like when you place your hand over burning stuff you will immediately take your hand away to that stuff.

¿Cuántas partes se divide el cráneo?

Answers

Answer:

8

Explanation:

Los 5 huesos que forman la base del cráneo son el etmoides, el esfenoides, el occipital, el frontal emparejado y el temporal emparejado. La base del cráneo se puede subdividir en 3 regiones: las fosas craneales anterior, media y posterior.

Espero que esto ayude

What statements are true about glycolysis?
Select all that apply.
it consumes some ATP as well as producing it
it produces ATP that can be directly used by cells
o it does not directly require oxygen to operate
o it produces more ATP than any of the other respiration reactions

Answers

Answer:

 true it consumes some ATP as well as producing it

true it produces ATP that can be directly used by cells

true it does not directly require oxygen to operate

false it produces more ATP than any of the other respiration reactions

Glycolysis consumes some ATP as well as producing it, it produces ATP that can be directly used by cells and it does not directly require oxygen to operate. Hence option A,B and C is correct.

What is ATP?

ATP stands for adenosine triphosphate. It is defined as an organic substance that fuels a variety of functions in living cells, including chemical synthesis, condensate dissolution, nerve impulse transmission, and muscular contraction. It is a byproduct of the photophosphorylation, cellular respiration, and fermentation processes and serves as the primary energy currency of the cell.

Glycolysis is defined as a chain of events that convert glucose into two pyruvate molecules, which have three carbons each. Glycolysis is a cytoplasmic process that breaks glucose down into two molecules with three carbons apiece and releases energy. Hexokinase, a phosphorylating enzyme, assists in the phosphorylation process that traps glucose.

Thus, glycolysis consumes some ATP as well as producing it, it produces ATP that can be directly used by cells and it does not directly require oxygen to operate. Hence option A,B and C is correct.

To learn more about glycolysis, refer to the link below:

https://brainly.com/question/14076989

#SPJ6

hello!!
What´s Antibiotic

Answers

Antibiotics are drugs that are able to fight diseases caused by bacteria. Besides, it is a "golden solution" that can kill harmful bacteria (pathogenic bacteria such as fungi, actinomycetes, ...), has the effect of inhibiting the growth and spread of of these bacteria.

Answer:

antibiotics mean a type of antimicrobial substance against bacteria.

pls answer this guys pls

Answers

Answer:

a

Explanation:

A projectile is fired vertically upward at an initial velocity of 100 m/s. How high will it rise? How long will it take to reach that height?

Answers

The question is solved using the equations of motion

According to the equations of motion:

[tex]v^2 = u^2 -2gh[/tex]

v = final velocity

u = initial velocity

g = acceleration due to gravity

h = height

Note that at the maximum height, the final velocity (v) = 0 m/s

so we can write:

[tex]u^2 = 2gh[/tex]

[tex]h = \frac{u^2}{2gh}[/tex][tex]h= \frac{100^2}{2 * 10}[/tex]

h = 500 m

The time taken is obtained from:

[tex]v= u - gt[/tex]

since v= 0 at maximum height

[tex]u = gt\\\\t= u/g\\\\t= 100/10\\t = 10 s[/tex]

For more about equations of motion, see

https://brainly.com/question/20594939

What is the scientific term used for the chemical reaction when a fuel burns? (Hint: your answer should be one word.)

Answers

Answer:

Combustion

Explanation:

Combustion is the chemical reaction that happens when fuel burns.

plz help me
I will give u like plus follow u​

Answers

[tex] \hookrightarrow\large\sf \: Pepsin \: is \: an \: example \: of \: \boxed{\underline{\bf \: protease.}}[/tex]

Whiteflies are common pest insects found on cotton, tomato, poinsettia, and many other plants. Nymphs are translucent and mostly sessile, feeding on their host plant's phloem (sap) from the undersides of leaves. They undergo incomplete metamorphosis into winged adults. Because whitefly nymphs cannot escape predation by moving, you hypothesize that their translucent bodies make them hard to spot by predators. How could you directly test this hypothesis?

Answers

Answer: Comparing the rates of predation on whitefly nymphs coated with a nontoxic dye versus the undyed whitefly nymphs.

Explanation:

A hypothesis refers to an assumption, which is proposed for the sake of an argument which is tested to ascertain if it's true.

The hypothesis can be tested by comparing the rates of predation on whitefly nymphs coated with a nontoxic dye versus the undyed whitefly nymphs.

How do temperature and concentration of monounsaturated phospholipids change the rate at which molecules permeate the plasma membrane?

Answers

Answer: At low temperatures the fluidity of the membrane decreases and it favors fluidity. The higher the concentration of unsaturated fatty acids, the less tightly the phospholipids can bind and the more fluid (more permeable).

Explanation:

The plasma membrane is a lipid layer that delimits the entire cell, dividing the extracellular medium from the intracellular (the cytoplasm of a cell). They are composed of phospholipids, which are molecules composed of glycerol, a phosphate group and two lipid chains (such as fatty acids). Glycerol is a three-carbon molecule that functions as the backbone of this membrane. A geometry is formed that allows the phospholipids to line up side by side to form broad sheets. They are insoluble in water, but their unique geometry causes them to aggregate in layers without any energy input, as they possess a hydrophilic phosphate head and a hydrophobic tail consisting of the two fatty acid chains. The hydrophilic heads of the phospholipids in a bilayer membrane face outward and are in contact with the aqueous fluid inside and outside the cell. Because water is a polar molecule, it readily forms electrostatic (charge-based) interactions with the phospholipid heads.

Selective permeability is a property of the plasma membrane and other semipermeable membranes that allow only certain particles to pass through them. In this way, those particles that are needed by the cell can enter the cell and those that are not useful to the cell are prevented from entering. In the same way, the cell can eliminate the particles it has produced as waste. In this way, the entry and exit of substances through the membrane is regulated and the correct functioning of the cell is achieved.

For a particle to be able to cross the plasma membrane it must have a size equal to or smaller than the pores of the membrane, it must have the opposite charge to the charge of the membrane or simply have a neutral charge, and if it is larger than the pores it must be dissolved in a solution, decreasing its size and thus be able to enter the cell through the membrane.  

Plasma membranes are fluid and this fluidity depends on their lipid composition and temperature. Depending on the temperature, membrane lipids can be found in two different states or phases: gel (solid-like, with more rigid hydrocarbon chains) and liquid crystal (more fluid, with more mobile hydrocarbon chains). At low temperatures the fluidity of the membrane decreases and in these conditions the increase of its concentration favors fluidity. The temperature at which the transition from one state to the other occurs is the phase transition temperature (Tc). At values below Tc, the bilayer is in the gel state and at higher values it passes to the liquid crystal. It should be noted that there is an equilibrium between the gel state and the liquid crystal state and that the characteristics of the lipids of the bilayer condition the transition temperature. In the case of bilayers consisting of only one type of lipid, the Tc is well defined. But biological membranes are complex lipid mixtures and the transition from one state to another occurs over a range of temperatures. The presence of short-chain or unsaturated fatty acids reduces the transition temperature, while saturated fatty acids and the increase in the length of the hydrocarbon chains cause this temperature to rise. Then, phospholipids with unsaturated fatty acid tails cannot bind as tightly due to the bent structure of their tails. For this reason, a membrane of unsaturated phospholipids remains fluid at lower temperatures than a membrane of saturated phospholipids.  

The fluidity of a membrane is the ability of a molecule to move through it. In short, the higher the concentration of unsaturated fatty acids, the less tightly the phospholipids can bind and the more fluid (more permeable) the membrane will be even at low temperatures. However, at low temperatures the fluidity of the membrane decreases (lower permeability) but the effect will depend on the composition of the fatty acids. To determine the exact permeability, it is necessary to relate the concentration of unsaturated bonds and the length of the fatty acids in the phospholipids and the temperature.

How are mitosis and binary fission similar?
A. They produce identical daughter cells.
B. They occur only in prokaryotes.
C. They involve division of nuclei as well as cytoplasm.
D. They occur only during sexual reproduction.

Answers

Answer:

They produce identical daughter cells.

Which phase happens first in meiosis

Answers

prophase 1 happens first

evolution by natural selection is an example of a scientific

Answers

Answer:

Ideas aimed at explaining how organisms change, or evolve, over time date back to Anaximander of Miletus, a Greek philosopher who lived in the 500s B.C.E. Noting that human babies are born helpless, Anaximander speculated that humans must have descended from some other type of creature whose young could survive without any help. He concluded that those ancestors must be fish, since fish hatch from eggs and immediately begin living with no help from their parents. From this reasoning, he proposed that all life began in the sea.

Have no idea hopefully some1 can help you

Important steps in sequencing pure proteins include all of these except: a. Determining the amino acids on the ends of the smaller peptides b. Determining the isoionic pH of the protein c. Determining the amino acids on the ends of the protein d. Breaking the protein into smaller peptides e. Determining the amino acid composition

Answers

Answer:

b. Determining the isoionic pH of the protein

Explanation:

The sequencing of pure proteins is nothing more than the analysis of the amino acids present in isolated proteins. This analysis is composed by the study of the sequence that the amino acids assume within the protein, the amino acids present in the extremities and the constitution of each one of these amino acids. In summary, we can state that protein sequencing refers to the constitution of these proteins. In this case, the isotonic pH of these proteins is not relevant information.

How does the Gulf Stream affect London?
O
A. It moves warm water north from the Gulf of Mexico during the winter, keeping the temperature constant year round.
0
B. The moving water causes lower air pressure which holds less moisture and reduces the precipitation that London
receives.
C. It moves warm water north from the Gulf of Mexico, making London warmer than it should be at its latitude.
D. It moves cool water north from the Gulf of Mexico, making London colder than it should be at its latitude.

Answers

Answer:

The Gulf Stream affects London because C. It moves warm water north from the Gulf of Mexico, making London warmer than it should be at its latitude.

Explanation:

If it weren't for the Gulf Stream, London would have the same climate as Canada rather than New York. This is why latitude is not the only factor for an area's average temperature throughout a certain time of a year.

Which actions could be categorized in the “aerobic” section of the Venn diagram?

Check all that apply.

consists of three stages

yields 36 ATP molecules

does not require oxygen

produces lactic acid

starts process with a glucose molecule

Identify the stage of cellular respiration in which each of the following takes place.



Produces 32 ATP molecules

Creates four ATP molecules, but then gains overall only two

Gives off carbon dioxide

Gives off water

Produces two ATP molecules

Answers

Answer:

start process with gulcose

Explanation:

simple

What is mean by photosynthesis?

Answers

Answer:

the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water.

Hey there!

Photosynthesis is the reaction that converts light energy to chemical energy in sugar and carbohydrates. Humans can't eat sunligh, so we eat the plants. Plants convert the energy in the sunlight into chemical energy using chlorophyll. Chlorophyll is a molecule produced by plants, algae and cyanobacteria, which aids in the conversion of light energy into chemical bonds. It is the reen pigment found in the chlorookasts of higher plants. They are a part of our ecosystem, and they are lower on the food chain.

Hope this helps! I promise I did not copy or anything like that from the internet.

Have a great day! :)

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