What is the approximate age of the ash footprints at Laetoli? (Hint: what is the radiometric age of Laetoli?)

Answers

Answer 1

Answer:

The correct answer is - 3.66 million years ago.

Explanation:

Laetoli, located on the Eyasi Plateau which is known for the remains or footprints of the oldest hominin that were formed and preserved by a series of events -  a volcanic eruption, a rainstorm, and another ashfall.

The remains and footprints were discovered at 1978 and are attributed to Australopithecus afarensis. The age of this remaining footprint can be estimated with the help of the radiometric method of the remains which tells that the footprints are 3.66 million years ago formed.


Related Questions

Please helppp!!! it’s of biologyyyy

Answers

Answer:

Im sorry i dont know the answer !!!

Explanation:

1. C (Both cells and tissue)
2. D (Protozoa)
3. A (Blood)
4. B (Virus)
5. B (Ribosome)
6. B (46)
7. A (Saturation)

what is variable motion?Explain with example. ​

Answers

Answer:

Variable Motion. different distances traveled in equal times. The speed of the object is changing. Periodic Motion.

Explanation:

Explanation:

variable motion occurs when a body covers unequal distances in equal intervals of time in a specified direction. Example: A rotating fan at a constant speed has variable velocity, because of continuous change in direction.

Which level of organization listed here includes every level listed?
cation
red blood cell
DNA molecule.
heart
zebra

Answers

Answer:

Zebra

Explanation:

It's an orgainsm, it has red blood cells, a heart, DNA molecules and cations, probably

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:

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.

please answer the questions
it's urgent​

Answers

Answer:

i)f

ii)d

iii)e

iv)a

v)b

vi)c

I’LL GIVE A BRAINLIEST IF YOU ANSWER QUICKLY!!!

Write a CER to answer the question below.
2. Explain how the chemical properties of water and the characteristics of the water cycle allow for plants to acquire the nitrogen necessary to grow in the experiment
above. Use the following terms in your answer:
-polar, dissolve, cohesion, evaporation

Answers

Answer:

Explanation:

Aquifers are groundwater reservoirs often tapped by wells. Water:  Water is pretty darn important for living things.

what is PM 2.5 and how does it affect people?​

Answers

Particles in the PM 2.5 size range are able to travel deeply into the respiratory tract
Fine particles (PM2.5) pose the greatest health risk. These fine particles can get deep into lungs and some may even get into the bloodstream. Exposure to these particles can affect a person's lungs and heart.


Explain briefly four
why, peasant
farmers find it diffcult to get
farm credit

Answers

Answer:

The peasant farmers operate mainly in the rural environment of the country. They operate on very small holdings using mostly traditional method because, their income is relatively low and the capacity to save is poor. Therefore needs for credit in order to meet the small farmers output and input

please answer urgently​

Answers

Answer:

C- the enzyme is represented by the letter C

Explanation:

If you were running an experiment to determine the color of light at which beans grew best, what would be the variable?
Group of answer choices

the number of beans plants in the experiment

the amount of water you give the beans

the color of the light under which each bean is grown

the height to which you let the sprouts grow

Answers

Answer:

The number of beans in the experiment

Explanation:

I hope it helps choose me the brainer

If eukaryotes all came about due to endosymbiosis, what would result from that?

preserved DNA from the original ancestor that remains unchanged

every organism would have the same set of body systems and functions

ancient prokaryotes living inside of modern eukaryotes

similar structures in eukaryotes with slight variations depending on their use

Answers

[tex]Hello[/tex] [tex]There![/tex]

I'm not sure, if this is right...

But, I believe the answer is..

D. similar structures in eukaryotes with slight variations depending on their use.

Hopefully, this helps you!!

[tex]AnimeVines[/tex]

Answer:

Similar structures in eukaryotes with slight variations depending on their use.

Tiny structures that carry out cell functions are collectively called:

Answers

Answer:

YOUR ANSWER IS ORGANELLES .

THEY CARRY DIFFERENT FUNCTION INSIDE A CELL.

HOPE IT HELPS

The tiny structures that carry out various functions in a cell are collectively called organelles.

Organelles are microscopic in nature. Just like we have various organ parts in the human body that performs several body functions, so also do we have various organelles in a cell that carry out specific functions within a cell.

Organelles which can be referred to as "little organs" include the following: mitochondrion, nucleus, lysosomes, ribosomes, chloroplasts and so on.

Thus, all these tiny structures listed above which carry out cell functions are collectively called organelles.

Learn more about organelles here:

https://brainly.com/question/10078733

what is symbiosis _____

Answers

Answer:

Symbiosis, any of several living arrangements between members of two different species, including mutualism, commensalism, and parasitism. ... Any association between two species populations that live together is symbiotic, whether the species benefit, harm, or have no effect on one another.

Explanation:

Please Mark me brainliest

Answer:

Mutualistic, commensalistic, or parasitic symbiosis is any form of an intimate and long-term biological connection between two separate biological species. Each symbiont, or group of organisms, must be of a distinct species.

OAmalOHopeO

What is the Dependent Variable?

Answers

Answer:

pitcher with the same velocity

The evolutionary history and development of whales has been hotly debated. Recently there has been a major shift in our understanding of the processes used to detail whale evolution. This indicates that: Group of answer choices A) Aspects of evolution are constantly being challenged and explored in light of new evidence. B) Gaps in the fossil records will never allow us to fully understand evolution. C) Scientists studying evolution typically present ideas with very little evidence, leaving it to others to find proof of their ideas. D) Much of the science of evolution is based on speculation that can easily be changed when scientists think of new ideas.

Answers

Answer:

Aspects of evolution are constantly being challenged and explored in light of new evidence

Explanation:

The whole idea of evolution has to do with the fact that organisms developed into their present form from simpler life forms. According to Oxford dictionary, evolution is; ''the process by which different kinds of living organism are believed to have developed from earlier forms during the history of the earth.''

Evolution depends on evidence from fossil records. Evidences that support the theory of evolution continue to be amassed as science advances. Hence, aspects of evolution are constantly being challenged and explored in light of new evidence.

For this reason, the evolutionary history and development of whales is being hotly debated and there has recently been a major shift in our understanding of the processes used to detail whale evolution.

A scientist wants to test how a species of insect reacts to changes in its
environment. She puts the insect in a container and leaves it outside
overnight. Which is the dependent, rather than independent, variable in this
experiment?
O A. The amount of light available to the insect
O B. The dew that collects for the insect to drink
O C. The behavior of the insect in the container
O D. The change in temperature as the sun goes down

Answers

Answer:

C is the correct answer

Explanation:

The answer is C, the behavior of the insects

In terms of pedogenic regimes, the process that results in an accumulation of humus overlaying a thick, water saturated layer of clay in cold, wet climates with poor drainage conditions is

Answers

Answer:

https://onlinelibrary.wiley.com/doi/full/10.1111/j.1936-704X.2015.03186.x the ans is more than 5000 lines so I cont lell it so it is the link of the ans

A researcher is designing a laboratory experiment to determine whether the inorganic substance A affects the rate of a reaction between two colored liquids,X and Y. When the reaction is complete, the liquid is clear. The reaction between X and Y is similar to one used by manufacturers to produce certain chemicals in factories

Which method would best answer his question about reaction rate and what will he find out about substance A

Answers

first he should measure how long it takes for the liquid to become clear if X and Y are mixed together. Then he should measure how long it takes if he also adds substance A to X and Y. He will find out if substance is a catalyst

The study of structure or how organisms are organized on the cellular, tissue, organ, system, or organism levels is called what

Answers

Answer:

Anatomy.

Because Anatomy is the study of internal body organs

For a scientist, assessing the validity of information requires
a specific knowledge
b. a hypothesis
c. experimentation
d. questions
Please select the best answer from the choices provided
Ο Α
ОВ
Ос
OD

Answers

Answer:

The correct answer is letter C. Experimentation.

Explanation:

For a scientist, assessing the validity of information requires experimentation. In statistics and sciences, the validity of an information has no agreed definition but it generally refers to the how the concept is being experimented before reaching to the point of conclusion.

The correct answer is C

An organism that produces its food by photosynthesis _____.

must be placed in the Plantae kingdom
must be placed in the Animalia kingdom
may be placed in the Animalia kingdom
may be placed in the Plantae kingdom

Answers

must be placed in the Plantae kingdom

What issues, organs, and systems were involved in this process of heavy breathing

Answers

Answer:The respiratory system is the network of organs and tissues that help you breathe. It includes your airways, lungs and blood vessels. The muscles that power your lungs are also part of the respiratory system.

Explanation:

Name the element which used to produce the fungicide?​

Answers

Answer:

Copper and Sulfur

Explanation:

Copper and sulfur are still widely used to produce the fungicide.

hope i helped :)

What effects are produced on environment by industry?​

Answers

Answer:

climate change, loss of natural resources, air and water pollution and extinction of species.industrial processes can have negative environmental impact.

Explanation:

easy biology question below first correct answer gets brainliest

Answers

Answer:

Vestigial in that sense that the organ seemingly has no functions or useless now but they might have functions previously which are lost someway due to evolution. ... The human appendix may be considered as a vestigial organ as it has been proved that the removal of the organ after infancy does not create any harm

Explanation:

Define matter

Thanks!

Answers

Anything that occupies space and has mass.

Which of the following is NOT an essential part of turning nitrogen into a form
usable by animals?
Answers

A. Lightning
B. Nitrogen fixing bacteria
C. Denitrifying bacteria
D. Nitrifying bacteria

Answers

Answer:

lightning because it doesnot support freely stated nitrogen to convert in usable nitrogen

The one that essential part of turning nitrogen into a form usable by animals is lightning. The correct option is A.

What is lightning?

Lightning is a spark of electricity that occurs in the atmosphere between air and ground. It occurs when two oppositely electrical charges discharge electrostatic energy.

Lightening is no use to animals, instead, it causes damage to houses, animals, and trees when they fall down.

Thus, the correct option is A. Lightning.

Learn more about lightning, here:

https://brainly.com/question/3454463

#SPJ5

What is the primary source of protein in your diet?

Answers

Answer:

animal source and plant sorce

Explanation:

a.eggs,meat

b.legumes

Eggs, beans, tofu, meat if you eat it

mapa mental sobre El origen de las especies

Answers

El origen de las especies, cuya primera edición apareció en 1859, es el libro más conocido de El biólogo británico Charles Darwin. En el libro, Darwin expone su teoría de la evolución:

Afirma que toda la vida en la Tierra tiene un ancestro común. Que la selección natural es el mecanismo principal para la evolución de las especies.

El libro está considerado como una de las obras científicas más importantes de la historia. Causó revuelo en el momento de su publicación porque atribuyó la riqueza de la forma de vida en la Tierra a un proceso mecánico más que a una inteligencia sobrenatural. Es cierto que otros habían sugerido previamente que podría haber cosas como la evolución o la selección natural, pero "El origen de las especies" es el primer trabajo que extrae la mayor consecuencia de estos conceptos.

Aprende más acerca de este tema en https://brainly.com/question/16994577.

Where do organisms acquire the oxygen
necessary to carry out cellular
respiration?
A. It is removed from water.
B. It is from the atmosphere.
C. It is removed from food.

Answers

Answer:

oxygen is obtained from the atmosphere

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