What is the age of a meteorite if potassium-40 decayed from 80 g to 10 g? The half-life of potassium-40 is 1.3 billion years.
1.3 billion years
2.6 billion years
3.9 billion years
5.2 billion years
Answers
Answer: b
Explanation: i toook the test
Answer: C.
Explanation:
Related Questions
what type of phrase is “driving a car”
Answers
Answer:
Laws of inertia/Newtons law of movement ?
A Verb ??
An Action being done???
Pollutants coming from a cars exhaust ????
Explanation:
Bro add some context .
a lion is running through the savanna chasing a gazelle. he is using a lot of energy to do this. which process allows his body to produce this energy?
Answers
Describe the process of oxidation in terms of electrons AND energy.
Answers
Oxidation is described as the loss of electrons and energy by a molecule.
OXIDATION:Oxidation is a process whereby a molecule loses electrons (e-) or energy to become positively charged. Oxidation changes the oxidation number of the molecule involved depending on the number of electrons lost. Reduction is the opposite of oxidation, and it entails gain of electrons and energy by a molecule. Together, they are called oxidation-reduction or redox reaction.Learn more about oxidation at: https://brainly.com/question/3867774?referrer=searchResults
Photosynthesis and respiration depend on each other for the exchange of: carbon dioxide and oxygen water and carbon dioxide water and oxygen carbon and oxygen
Answers
carbon dioxide and oxygen
If red blood cells are placed in distilled water and examined under a microscope
no cells are seen.
Explain why no red blood cells would be seen
Answers
Answer:
The distilled water made the red blood cells burst.
Explanation:
Distilled water is a hypotonic solution containing ZERO salt content. It is 100% water, making the red blood cells (RBC) take in water that causes the RBC to swell, then burst.
Considering that cells vary in shape,what other dimensions or parameters of the cell could be used to estimate cell size?
Answers
Answer:
Three general factors determine cell shape: the state of the cytoskeleton, the amount of water that is pumped into a cell, and the state of the cell wall. Each of these three factors is highly dynamic, meaning they are constantly in flux or can be suddenly changed. This dynamism is how cells can vary in shape.
Oxygen is formed from carbon dioxide in ____(1)____, while carbon dioxide is formed from oxygen in ____(2)____. A (1) photosynthesis, (2) cellular respiration B(1) cellular respiration, (2) photosynthesis C (1) fermentation, (2) anaerobic respiration D(1) aerobic respiration, (2) photosynthesis
Answers
Answer:
A
Explanation:
Oxygen is formed from carbon dioxide in ____(1)____, while carbon dioxide is formed from oxygen in ____(2)____.
A (1) photosynthesis, (2) cellular respiration
B(1) cellular respiration, (2) photosynthesis
C (1) fermentation, (2) anaerobic respiration
D(1) aerobic respiration, (2) photosynthesis
A typical leaf is composed of multiple layers of specialized cells. What is the correct order of layers starting on the upper surface of the leaf and progressing to the lower surface?
Answers
Answer: cuticle - epidermis - palisade mesophyll - spongy mesophyll- epidermis - cuticle
Explanation:
Hello please asap pleaseeeeee
Answers
Answer:
first option stores water
Explanation:
vacuole stores substances
Which type of curve?*
exponential
logistic
Answers
Answer:
Answer: The different types of curves are Simple curve, Closed curve, Simple closed curve, Algebraic and Transcendental Curve
-a logistic curve is shaped more like an s.
can someone help me with this question
Answers
Explanation:
First row (left)
SS
smooth pod shape
First row (right)
Ss
smooth pod shape
Second row (left)
Ss
smooth pod shape
Second row (right)
ss
constricted pod shape
Please help!! Multiple choice.
Answers
Answer:
Okazki fragments are pieces that are replicated on the discontinuous strand.
I’m confused with this question
Can anyone help?
Answers
I get why u were confused cause the way they word some of the answers literally doesn't make any mf sense
my best answer would be the 3rd one (sediment that is sorted by size due to the changing velocity of the water)
Explanation:
because when sediments are well sorted their sizes are similar
Which rock is an example of a chemical sedimentary rock?
-
a: coal
b: iron ore
c: shale
d: sandstone
Answers
Answer:
I think none of them since so far lime stone is the most know example of chemical sedimentary rock.
what is the solid obtained at the neck of a funnel in sublimation?
Answers
Answer:
Sublimation is conversion of solid of vapors on heating and vapors to solid on cooling. The solid which undergoes sublimation is called sublime, whereas the solid obtained by cooling vapors is called sublimate.
what role did the black death play in the decline of feudalism
Answers
Answer:
The Black Death brought about a decline in feudalism. The significant drop in population because of massive numbers of deaths caused a labor shortage that helped end serfdom. Towns and cities grew. The decline of the guild system and an expansion in manufacturing changed Europe's economy and society.
Explanation:
Hope This Helps~
Happy Hoildays~
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Holaaaa
Alguien me puede responder estas preguntas?? las necesito porfa
1. ¿Que estructura tiene el ADN de la banana?
2. ¿Por qué la banana tiene ADN?
3. ¿Cuál es la función del ADN en la célula?
Answers
Answer:
Explanation:
hi
Can someone help me please?!
A family released their pet fish family into a local pond. The fish had no known local population. The impact of the fish on
the ecosystem is not yet known.
Which term would best define the fish added to the pond?
O invasive species
O introduced species
O native species
O symbiotic species
Answers
The term that would best define the fish added to the pond is INTRODUCED species. These species may be harmful to native species.
Introduced species are exotic species which has arrived there by human activity, which may be harmful to native species.
Introduced species may even be harmful to the entire ecosystem because they can break the delicate equilibrium of the ecosystem.
Introduced species may compete with native species for limited resources (e.g., water resources, foods, habitat, etc).
Learn more in:
https://brainly.com/question/21452505
Answer:
To sum it up, it's A "Introduced species"
Explanation:
It's correct. Have a blessed day <3
Which of these will be the best for a jungle environment
Answers
I think answer choice B, I believe its a black panther
_____ cannot be digested by human digestive enzymes. Group of answer choices Starch Fiber Maltose Glycogen
Answers
Answer: Fiber cannot be digested by human digestive enzymes.
Since the body can't break down fiber into sugar molecules, like most carbohydrates, it ends undigested.
How do gravity work?
Answers
Answer:
Gravity makes the Earth constantly pull us down. ... The force of gravity depends on the mass (weight) of each object. The force with which two objects attract each other is proportional to their mass and decreases rapidly the moment we separate them.
Explanation:
hi i'm mexican long live mexico
Answer:
the closer objects are to each other, the stronger their gravitational pull is. Earth's gravity comes from all its mass. All its mass makes a combined gravitational pull on all the mass in your body.
Explanation:
As well as carbohydrates, what is wholemeal bread a good source of?
Answers
Answer:
Proteins
Explanation:
Wholemeal bread is a rich source of carbohydrates and protein along with unsaturated fats, vitamins and minerals. Hope this helps.
How do archaebacteria survive extreme environments?
Please help me! NO LINKS.
Answers
Answer:
Archaebacteria are found in very harsh conditions such as in the volcanic vents or at the bottom of the sea. They are often called "extremophiles". They can easily survive in such extreme environment as sea vents releasing sulfide-rich gases, hot springs, or boiling mud around volcanoes.
Explanation:
Answer:
Archaebacteria are found in very harsh conditions such as in the volcanic vents or at the bottom of the sea. They are often called "extremophiles". They can easily survive in such extreme environment as sea vents releasing sulfide-rich gases, hot springs, or boiling mud around volcanoes.
Explanation:
ayye girl hru??
Decomposers make ______
available.
A. erosion
B. air
C. weathering
D. nutrients
Answers
Answer:
D
Explanation:
Answer:
D. Nutrients.
Explanation:
if one cell undergoes mitotic division every 3 minutes and 18 minutes pass, how many cells will have been created?
Answers
Answer:
6
Explanation:
if there is one cell that is being created every 3 mins, then you would divide 18 by 3 and get 6.
Answer:
here look at this it might help you
Explanation:
Cellular respiration uses one molecule of glucose to produce approximately
A. 2 atp molecules
B. 4 atp molecules
C. 32 atp molecules
D. 36 atp molecules
Answers
Answer and Explanation; Equation for Cellular Respiration:
C₆H₁₂O₆ + 6O₂ --> 6H₂O + 6CO₂ + 36-38 ATP
Products of Cellular Respiration:
Water, Carbon Dioxide, and 36-38 ATP molecules
The answer is (D) 36 ATP molecules.
PLEASE HELP!!!!!!!!
Which phrase best describes the context of a speech?
A. The crowd's overall feelings
B. The visual aids the speakly uses
C. The quality of the fact-checking
D. The evidence the speech presents
Answers
Answer:
I believe it would be D The evidence the speech presents
Explanation:
The context of a speech refers to the purpose, which makes me think it would best be described as the evidence since evidence is used to prove your purpose.
The basic equation for photosynthesis using the names of the molecules involved. Identify the products and reactants is light a product or reactant? If not what does it apply to the equation? I NEED HELP!
Answers
Explanation:
e..................... ...........
Please help!!! Multiple choice problem.
Answers
Answer:
Explanation:
B
3 Question
Drag the tiles to the boxes to form correct pairs.
A fossil can reveal many characteristics and properties of the original species. Match the following
characteristics to the fossil of the once-living organism that best demonstrated the characteristic.
s
Tiles
was a predator
crawled and burrowed
walked on two legs
was a stationary organism
Pairs
Answers
First image shows a stationary organism whereas the second image indicates predator.
The first picture represents a leaf structure which is a part of plant and we know that plant is a stationary organism means it can't move from one place to another so that's why it is called a stationary organism.
While on the other hand, the second picture represents predator due to the presence of sharp teeth which helps the predators in catching and tearing of prey so we can conclude that first image shows a stationary organism whereas the second image indicates predator.
Learn more about fossils here: https://brainly.com/question/14097516
Learn more: https://brainly.com/question/25877765
Answer:
1. walked in two legs
2. crawled and burrowed
3. was a stationary organism
4. was a predator
Explanation: