Answer:
I will give a hypothesis. Just like a tree, when you cut a tree by its trunk, you will the rings. The rings around it represents the tree's age. So when you cut rock, the pores in the rock determine whether it is an old rock or a fossil rock.
Explanation:
The reason is, if it is limestone and it is an old rock, the pores will be slightly big and if the limestone is a fossil rock, then the pores will be bigger due to leaching or denaturing of the minerals in the rock through the ages.
Answer:
Radioactive elements all have a specific half-life, which is the time it takes for half of the radioactive elements in the fossil to disappear. In absolute dating, numbers are given to the ages of different fossils and rocks. To give an exact number or age range to a fossil, scientists use radiometric dating. This is where the half-lives of radioactive isotopes within the fossil or in the rock surrounding it are analyzed. Radioactive isotopes decay at a steady rate. By measuring the ratio of the radioactive isotope to the stable isotope it decays into, the number of completed half-lives can be estimated. Since you know the rate of decay, you can estimate dates with this ratio.
Explanation:
This is the process used to help scientists establish how old rocks and fossils are
I'LL DO ANYTHING YOU WANT IF YOU ANSWER THIS
The relative humidity is 100%, and the temperature is hot. In a few sentences, explain how the weather would change if the temperature drops and becomes cool.
Answer:
The relative humidity will lower.
Explanation: Cool air cannot hold as much water than warmer air can. So once the temperature in the air drops, so does the relative humidity.
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condition necessary for osmosis to takes place
What two conditions are necessary for osmosis to take place
The conditions required for osmosis are:
Two solutions having different solute concentration.
A semi-permeable membrane. When two solutions having different concentration of solutes is separated by a semi-permeable membrane, the solvent moves from the region of high concentration of solvent
Why do cells become specialized in the human body?
Answer:
They can become any type of cell in the body.
Explanation:
They can transport molecules, metabolize nutrients, and reproduce within this one cell. ... Cell differentiation is the process by which cells become specialized in order to perform different functions. Specialized Cells in the Human Body. Multicellular organisms begin as just one single cell—a fertilized egg.
Lichens are not single organisms, but algae and fungi that function together. The algae use photosynthesis to make food for both organisms. The fungi produce digestive chemicals and absorb nutrients for both organisms.
How does the biological activity of lichens cause weathering in rocks?
Answer options with 4 options
A.
Lichens cause friction as they grow, which weathers the rocks.
B.
Lichens produce chemicals, which dissolve and weather the rocks.
C.
Lichens take in water, which freezes in cracks and weathers the rocks.
D.
Lichens absorb heat during photosynthesis, which weathers the rocks.
Answer:
The correct answer is B
Lichens produce chemicals which dissolve and weather rocks
1.Which of these statements is classified as inference?
Why is organic fertilizer is better than inorganic fertilizer? Pls pls pls answer I really need it
Answer:
organic fertilizer can cause less harm to the plant & environment as it isn't toxic (completely natural) as opposing to fertilizers, which is filled with toxic chemicals.
please answer thiis lol?
Answer:
b to a
Explanation:
since cells in membranes move from high to low concentration (diffusion). b has more molecules, so it will go into a.
what does a target cell require to respond to an extracellular signal molecule?
The latitude of a biome measures its height above sea level.
True
False
There are ________ enlargements of the spinal cord.
Answer:
There are two enlargements
Explanation:
how are respiration and photosynthesis related to one another
I need help FASTT
What are some possible genetic changes over time that can result from sexual selection?
Answer: Anything from coat color, body structure, etc
Explanation: Sexual selection is when the animals with the best traits survive to reproduce, so this means that anything that benefits the animals would be an outcome of sexual selection.
why are fleas lice wingless?
3. In the context of the article, how are we changed by war? Cite evidence from this text, your own experience, and other literature, art, or history in your answer
please help
Answer:
It includes written letters and diaries written during war time. It will describe these chapters that is exploration of world by war.
True or False: Tetanus can make breathing difficult.
Answer:
True is correct on edg
Explanation:
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4 Spheres Observation (Bio, Geo, Atmo, Hydro) : What did you see that represents each? How did they interact with each other? and pls be specific in ur answer, and pls no links!
Answer:
The spheres interact to effect Earth’s systems and processes, and they are constantly changing each other.
For example, ocean currents (hydrosphere) affect air temperature (atmosphere): The Gulf Stream is a powerful water current in the Atlantic Ocean. It’s warm water moderates the temperatures on the east coast of the USA.
Another example of how the spheres affect each other is through erosion. Erosion happens in the desert when wind (atmosphere) shapes the sand in the geosphere. Water (hydrosphere) can also shape land, such as in the formation of the Grand Canyon.
Humans have a huge impact on all spheres. Negative impacts, such as burning fossil fuels, pollute the atmosphere. Piling up our waste in landfills affects the geosphere. Pumping waste into the oceans harms the hydrosphere. And overfishing and habitat destruction can reduce the diversity of living things in the biosphere.
However, people everywhere are working to change things. Recycling efforts are increasing all over the world, and companies are finding new ways to reduce fossil fuels. In the US alone, people are recycling six times more than a generation ago.
Which medical term is used to describe diseases that have an unknown cause?
Answer:
b. Idiopathic
Explanation: is correct
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Answer: a+c
ExplanationExplanation:
TEST PLS HELPP
In general, how small are viruses?
a) a few millimeters to a few centimeters
b) as big as bacteria
c) 50 times smaller than bacteria
d) about the size of an amoeba
Answer
Is C :)
I took the test
Answer: C
Explanation:
I took the quiz
how does water purifier work
Answer:
idontknow
Explanation:
Why do doctors give fluids when losing blood but not water ?
Help me
Answer:
In trauma patients, fluid resuscitation helps restore lost blood volume, regain tissue perfusion, and reduce mortality. Water is a different case.
Explanation:
Power refers to the rate at which _______ can be produced.
Answer:
c. ATP
Explanation: adenosine triphosphate
Option 3 is correct.
Among the given options,
■ Power refers to the rate at which ATP (Adenosine Triphosphate) can be produced.
=》 The ATP molecules produced in the mitochondria is known as the energy currency of the cell & provides energy to other cell organelles which help support on their proper functioning.
_____
RainbowSalt2222 ☔
What does the narrator notice outside the house before he goes in?
a fissure or crack in the wall
a dead bird in a tree
curtains twitching
an alligator in the moat
Membranous sacs containing substances that were produced in the cell, such as neurotransmitters or hormones, are called:
Membranous sacs containing substances that were produced in the cell, such as neurotransmitters or hormones, are called VESICLES.
Vesicles are membrane sacks that store different chemical messengers such as neurotransmitters and hormones.For example, neurotransmitter vesicles are specific synaptic vesicles that store neurotransmitters in order to release them at the synaptic cleft.The release of neurotransmitters or hormones by membrane vesicles leads to the activation of the target cell.In conclusion, membranous sacs containing substances that were produced in the cell, such as neurotransmitters or hormones, are called VESICLES.
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the hypothalamus controls the posterior pituitary by way of __________.
what process ultimately determines what specialized job a cell will have within an organism?
What are the major divisions and subdivisions of the human nervous system?
Answer:
The nervous system as a whole is divided into two subdivisions: the central nervous system (CNS) and the peripheral nervous system (PNS)
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The nervous system as a whole is divided into two subdivisions:
Central nervous system (CNS)
Peripheral nervous system (PNS).
Which of the following is NOT a structure of the nervous system?
Answer:
b. The heart
Explanation:is correct
Name a plant organ, identify the tissues that make up this organ.
Hello!!
What tissues make up a leaf?
Leaves include two different types of photosynthetic parenchyma cells (palisade and spongy). Like all plant organs, they also contain vascular tissue (not shown). Monocots tend to have parallel veins of vascular tissue in leaves, while dicots tend to have branched or net-like veins of vascular tissue in the leaves.
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if jalen, who is from indonesia, undergoes counseling for a family problem, his therapist should be aware of his cultural background and the important role his family and community play in his life. this awareness is known as
The knowledge associated with cultural background and the role of family and community is known as CULTURAL COMPETENCE. It is the ability to interact with people from different cultures.
Cultural competence can be defined as the ability to understand and then interact with people from different cultures and/or different belief systems.
This feature (cultural competence) leads to effective and proper communication with people from different countries and cultures.
Cultural competence is composed of
Awareness of the own cultural backgroundKnowledge of different culturesAttitude towards people from different culturesCross-cultural skillsLearn more in:
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