Answer:
Scientists usually use the potassium-argon method to date rocks that are older than about 1 million years. Uranium-238 is also used for radiometric dating.
The radioactive isotope most applicable to date rocks of about 20 million years is Uranium
The use of radioactive isotope is used in the radiometric process of dating materials. Dating techniques are used in other to determine the age of rocks and minerals.
In other to ensure the effectiveness of the radiometric process, it is essential that the half life of the isotope be determined in other to measure the age of the rock. For instance, carbon - 14 isotope has an half life of 5,730 years. Hence, carbon - 14 dating will only be used in dating rocks below 50,000 years.In other to examine Rock layers of about 20 million years, the radioactive isotope to be used will be Uranium which could be used to date rocks of about hundred _ thousand million of years.
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What is the scientific name for a cat and dog?
Answer:
Copied directly from Go*ogle: "Domestic cat (Felis catus) and domestic dog (Canis familiaris)"
Explanation:
Answer:
Dog, cat
Explanation:
Dog, Canis lupus familiaris
Cat, Felis catus
Is this statement true or false?
A full moon occurs approximately three weeks after a new moon.
If humans are adding more carbor to the atmosphere than ever before, changing our climate whar can humans do to resolve this issue?
Please help I'll give a brainliest!
Traits can be_________ which means they can be seen and are capable of masking a different trait.
Traits can also be __________ which means they can be masked.
Answer:
✔ one allele
✔ each parent
✔ dominant
✔ recessive
✔ gene
Explanation:
Mendelian inheritance states that traits are determined when offspring receive
✔ one allele
for each trait from
✔ each parent
.
Traits can be
✔ dominant
, which means they can be seen and are capable of masking a different trait.
Traits can also be
✔ recessive
, which means they can be masked.
Alleles are different versions of the same
✔ gene
in an organism.
16. On this diagram, label the density and heat of the Earth's Layers.
Please help
(Didn’t find science so I put biology)
Answer:
Lithosphere: heat varies
Crust: density of 2.2, 1000°C at the base
Mantle: density of 7.8, 3500°C at the base
Outer core: density of 9.9, 5,000°C at the base
Inner core: density of 13.1, about 5000°C
Explanation:
Hope this helps!
The diagram shows a planet orbiting the Sun. Fill in each box with the statement that best describes each part of the diagram.
direction of gravitational
pull of the Sun on the planet
the planet’s resultant
orbital path
direction of the planet's
velocity and momentum
Answer:
direction of gravitational pull of the Sun on the planet
Explanation:
A planet orbiting or revolving around the sun due to gravitational force of the Sun on the planet which attracts the planet and compel the planets to move in a circular path. If this force of gravity is not applied on the planets, the planets will move in a straight line instead of circular direction so gravitational pull of the Sun on the planet is very necessary for moving planets in a circular path.
Answer: Here is a picture of the answere for a better perspective.
In most organisms, ___________ macromolecules play a central role as the energy source. This macromolecule must be transformed in the body to produce the usable energy molecule ______. Interestingly, this energy molecule is a _________ type of macromolecule.
A
carbohydrate, adenosine triphosphate, nucleic acid
B
lipid, atropine tetraphosphate, protein
C
protein, adenosine triphosphate, lipid
D
carbohydrate, atropine triphosphate, protein
Answer:
A
carbohydrate, adenosine triphosphate, nucleic acid
Explanation:
Retro means backwards. What is “retro” about retroviruses?
Answer:
The term "retro" in retrovirus refers to this reversal of the usual direction of transcription.
Explanation:
Retroviruses are the viruses from the virus family known as retroviridae. These are the viruses that use RNA as their genetic material and use an enzyme reverse transcriptase which is essential for their life cycle.
they called retro as they use the reverse process of the usual direction of transcription which means from RNA to DNA by duplicated their genetic material to produce DNA and incorporated into the genome of the host.
Answer:
just to play and have a good time
Explanation:
What is the correct term for a light product?
Answer:
Luminaire :b
Explanation:
plz give brainliest
Which of the following changes to Earth's surface is most likely to represent space and time on the smallest scale?
A landslide on a mountain
Uplift of mountain ranges
Breakdown of rock into sediments
Formation of a canyon
The changes to Earth's surface is most likely to represent space and time on the smallest scale is a landslide on a mountain.Thus, option A is correct.
What is the procedure of formation of Clastic sedimentary rocks?
Clastic sedimentary rocks are formed by the weathering process, In this process rocks get breakdown into sand, clay particles by the wind, water, and ice.
Clastic sedimentary rocks are also known as sandstone, and they are made of rocks and minerals. They are classified based upon composition, size, and texture.
Breccia is a clastic sedimentary rock with angular particles. Breccia is composed of particles that have diameter of greater than two millimeters. Breccia is formed by accumulation of angular broken rock or mineral debris. Breccia differ in composition according to the composition of mineral and rock from which the angular fragments were formed.
The changes to Earth's surface is most likely to represent space and time on the smallest scale is a landslide on a mountain.Thus, option A is correct.
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Which of the below is an example of a chemical that plants, algae, and animals all need to survive and grow?
carbon dioxide
oxygen
sunlight
(This is 7th grade science)
Answer:
b
Explanation:
How can humans affect the traits of other living things? Give an example
Answer:
We can change how they act
Explanation:
Like when we trained dogs
Indicate the organ (or organ part) producing or releasing each of the hormones listed below.
1.ACTH(adrenocorticotrope hormone) is secreted by the anterior pituitary
2.ADH(anti diuretic hormone) is secreted by the hypothalamus
3.Aldosterone is secreted by cortex of the adrenal gland
4.Calcitonin is secreted by the thyroid
5.Cortisone is secreted by the cortex of the adrenal gland
6.Epinephrine is secreted by the medulla of the adrenal gland
7.Estrogens are secreted by the ovaries
8.FSH is secreted by the anterior pituitary
9.Glucagon is secreted by the pancreas
10.Growth hormone is secreted by the anterior pituitary
11.Insulin is secreted by the pancreas
12.LH is secreted by the anterior pituitary
13.Melatonin is secreted by the pineal gland
14.MSH is sereted by the anterior pituitary
15.Oxytocin is secreted by the hypothalamus
16.progesterone is secreted by the placenta
17.prolactin is secreted by the anterior pituitary
18.PTH is secreted by the parathyroids
19.Testosterone is secreted bu the testes
20.Thymosin is secreted by the thymus
21.Thyroxine is secreted by the thyroid
22.TSH is secreted by the anterior pituitary
The anterior pituitary releases ACTH, growth hormone, FSH, MSH, TSH and prolactin. Hypothalamus releases ADH and oxytocin. Adrenal cortex secretes aldosterone, cortisone, and epinephrine. Thyroids release calcitonin and thyroxine. Ovaries release estrogens. Pancreas releases insulin and glucagon. Pineal gland melatonin. Placentas release progesterone. Parathyroids release PTH. Testes release testosterone. Thymus-secreted thymosin.
What is a hormone?Hormones are a class of signaling molecules found in multicellular organisms. These molecules are sent to distant organs by complex biological processes in order to regulate physiology and behavior. Hormones are also known as endocrine signaling molecules. Hormones are essential for the proper development of all organisms, including fungi, plants, and animals.
There are three primary categories of hormones: those derived from lipids, those derived from amino acids, and those derived from peptides.
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Which would be most impacted by a middle ear infection?
auricle
ear canal
auditory nerve
optic nerve
GIVING BRAINLIEST, THANKS AND FIVE STARS!
Thank you for helping me! Have A Great Day! :)
What is one of the most important forms of energy? Give two examples of how this type of energy is used in our lives.
Answer:
Electrical energy Explanation:
We use it to charge our phones and important devices. We also use it to power almost everything.
Answer:
Kinetice-the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.
Electriacl -Electrical energy is the energy carried by moving electrons in an electric conductor. It is one of the most common and useful forms of energy.
Explanation:
Have a nice day!
Which may form over time from the
impression a bird feather makes in mud?
A cast
B mold
C fossil film
D trace fossil
Answer:
cast
Explanation:
Answer: Cast
Hope it helps
PLEASE HELP ME I’LL MAKE SURE TO GIVE YOU THE YELLOW CROWN IF YOU GET IT RIGHT!!
Answer:
Chemical Hazard: pollutant
Explanation:
Answer:
Chemical Hazard; pollutant
Explanation:
Poison ivy contains a oily substance called urushiol. It reacts with the proteins in your skin and alerts the T-cells of the 'danger'. The T-cells may take a few days to create more T-cells to battle the urushiol.
Given two areas with equal sunlight and available water. Areal has a high amount of atmospheric carbon dioxide while Area II has
a low amount of atmospheric carbon dioxide,
How does the rate of photosynthesis in Area I compare to that in Area 11?
A)
Atmospheric carbon dioxide has no affect on the rate of photosynthesis.
B)
The rate of photosynthesis increases with a decrease in carbon dioxide.
The rate of photosynthesis increases with an increase in carbon dioxide.
D
The level of carbon dioxide increases with the level of available oxygen.
14)
Which microscone would he MOST useful for
Answer:
C. The rate of photosynthesis increases with an increase in carbon dioxide.
Explanation:
Photosynthesis, which is the process by which certain organisms obtain their food from the light provided by the sun, can be inhibited or promoted by certain factors. One of the reactants of the photosynthetic process is carbon dioxide (CO2), hence, an increase in the amount of carbon dioxide, increases the rate of photosynthesis.
According to this question, two areas with equal sunlight and available water are being described to have different levels or amounts of CO2. Area I has a high amount of atmospheric carbon dioxide while Area II has a low amount of atmospheric carbon dioxide. This means that Area 1 will undergo more photosynthetic activity than Area II.
In ocean-continent plate convergence, the ocean plate goes
under the continental plate. This is described as
Construct a scientific explanation for why fossils of the megalosaurus can be found in South America and Africa.
Answer:
La paleontología de dinosaurios o dinosaurología es una subdisciplina de la paleontología ... A los paleontólogos que se dedican a estos estudios se les denomina ... Buckland puso el nombre de Megalosaurus al dinosaurio propietario de aquel diente ... Aunque se puede encontrar fósiles por casualidad, los núcleos de ...
Explanation:
a puppy has long floppy ears like his mother and dark brown for like his father how did the puppy get these traits
Answer:
genes
Explanation:
the puppy got half their mother's chromosomes and half their dad's chromosomes therefore inheriting parts of their genes
WILL MARK BRAINLYEST
Did the flower used in this investigation come from a plant that reproduces sexually or asexually? Explain
your answer.
Answer:
asexually
Explanation:
Plants can't reproduce sexually
How does a virus make people sick? (What does the virus do the the host cell?)
Answer:
It enters your body
Explanation:
Which model best describes the path of energy during photosynthesis?
A. Sun --> Plant --> Sugar
B. Plant --> Chlorophyll --> Sun
C. Plant --> Sun --> Sugar
D. Sun --> Sugar --> Chlorophyll
Answer:
A is correct !
Explanation:
I Have Completed The Exam
Answer:
A. Sun --> Plant --> Sugar
Explanation:
q1) Kidneys filter .... from blood
q2) For plants ...... is the reservoirs of water and minerals
PLEASE ANSWER BOTH QUESTIONS
The heating of the Earth's surface and atmosphere by the Sun drives convection within the atmosphere and oceans.
Convection produces winds and ocean currents.
What is the BEST explanation of what causes stronger wind patterns?
The greater the pressure differences between a low-pressure area and a
high-pressure area, the stronger the winds.
B)
The lesser differences between a low-pressure area and a high-pressure
area, the stronger the winds.
The solar energy and convection currents do not influence winds.
D)
The sun's energy has no effect on wind patterns.
Answer: Option A
Explanation:
Convection is the process by which heat is transferred from a hotter body to a colder body. It usually occurs in liquids. The movement of hot air up and cold air down helps in heat transfer.
The sun helps the heat transfer between the water( ocean ) and atmosphere and due to this there is a difference in the pressure.
The warm water also makes the atmosphere warm and is less dense and has less pressure and meanwhile the colder air is more dense has high pressure.
The warm air rises up and cooler air move to the place of warmer air and this movement of warmer and colder air creates difference in pressure and leads to formation of wind. The more will be the difference , stronger will be the wind patterns.
_________ represents the presence of the rhesus protein on blood.
Answer:
Rh
Explanation:
Rh factor on the surface of red blood cells if it is present you are Rh negative if it is absent you are Rh positive
Answer:
Rh factor :)
Explanation:
Describe three other features of a bacterial cell.
Answer:
hope it helped
Explanation:
Bacteria are like eukaryotic cells in that they have cytoplasm, ribosomes, and a plasma membrane. Features that distinguish a bacterial cell from a eukaryotic cell include the circular DNA of the nucleoid, the lack of membrane-bound organelles, the cell wall of peptidoglycan, and flagella.
The features of a bacterial cell are the following:
Bacteria are a large group of prokaryotic microorganisms (devoid of cell nuclei) of various possible shapes and sizes.
They are essential in the decomposition processes of organic matter, necessary for the recycling of elements such as carbon or nitrogen.
They reproduce quickly and by asexual procedures, which consist of the replication of the progenitor cell in two exactly equal to it (binary fission).They are made up of a single cell without a cell nucleus, but with a nucleoid (an irregular region where the circular DNA of prokaryotes is found).They have a peptidoglycan cell wall that covers the cell outside the plasma membrane.Scattered throughout the bacterial cytoplasm are ribosomes (in which protein synthesis takes place) and there are also often plasmids (small non-chromosomal DNA molecules).Some bacterial cell also have capsules, a rigid protective structure that is outside the cell wall and flagella to move (if they are mobile).Therefore, we can conclude that bacteria are a large group of prokaryotic microorganisms (devoid of cell nuclei) of various possible shapes and sizes.
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PLEASE HELP ME 10 POINTS Short-term energy storage.
Quick release energy.
Answer:
Carbohydrate
Explanation:
(please mark me brainliest if you can)
Answer:
Carbohyrdate
what cell type has no membrane bound organelles has a single unbound chromosomes and is very small
Answer:
prokaryotic
Explanation:
A prokaryotic cell is a simple, single-celled organism that lacks a nucleus, or any other membrane-bound organelle