Answer:
10-20 percent
Explanation:
Which is an example of a chemical change?
Answer:
when you put chemicals in water and the water gets chemically changed?
Answer:
burning,cooking,rusting,and rotting.
Explanation:
A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity.
blood vessels that contain valves and rely on skeletal muscles to move blood are called:
A) arterioles
B) veins
C) capillaries
D) arteries
and why!? thanks!!
Answer:
veins because they carry low pressured blood due to which there is more chance for backward flow of blood and to prevent that they contain valves.
hope it helped uh..
Answer:
B. Veins
Explanation:
Veins carry blood relying on the action of the skeletal muscle as the body moves. Veins have valves so blood flows in only one direction. Valves are not present in arteries. Arterioles is small and contains valves to prevent backflow of blood but does not rely on skeletal muscles. Capillaries don’t have any valves. The correct answer would be veins.
All wetlands are considered freshwater ecosystem
Answer:
Marshes, swamps, and bogs are all considered wetlands. ... Wetlands are not considered freshwater ecosystems as there are some, such as salt marshes, that have high salt concentrations—these support different species of animals, such as shrimp, shellfish, and various grasses.
Explanation:
i hope this helps you!
Answer:
It will be false
Explanation:
Took on edg
Mechanisms of gene regulation
A DNA template is used to create an mRNA strand.
An mRNA template is used to create a DNA strand.
A DNA template is used to create a ribosome.
An mRNA template is used to create a tRNA strand.
Answer:
D. An mRNA template is used to create a tRNA strand
Explanation:
Edge 2020 100%
Answer:
D
Explanation:
anyways, hope i aint too late to answer this question :)
Select the right answer for each question.
7. The presence in the body of a disease is caused by.
a) germs
b) dead cell c) chemical unbalance
d) antibiotics
Answer:
A
Explanation:
The answer is A: germs.
Which structure is most likely used for hunting?
Answer:
A.claws
Explanation:
Explain how the interconnectedness of living and nonliving things is shown in the biogeochemical cycles.
Explanation:
energy flows, but matter is recycled.
the chemical components that make up living organisms are different they get recycled.....
biogeochemical cycles important to living organisms include the water carbon ..... body have been part of a huge number of living and nonliving things over the course of time!
If a horse and zebra breed to produce a sterile horse.____
means that one is
incapable of producing fertile offspring. In other words, their offspring cannot breed.
Describe biogeographic isolation?
Answer:
Biogeographic isolation is the separation of organisms of a species through geographical or biological forces.
Explanation:
Which base is found only in DNA?
adenine
O guanine
o cytosine
thymine
Answer:
DNA: adenine (A), thymine (T), cytosine (C
), and guanine
But thymine is only found in dna
and it is replaced by uracil in the rna
While an important source of freshwater, groundwater is not as widely used as rivers and springs. Please select the best answer from the choices provided T F
Answer:
False
Explanation:
EDGE 2021
While an important source of freshwater, groundwater is not as widely used as rivers and springs. This is a false statement because groundwater is widely used.
What is the use of ground water?The fresh water is present in lakes, springs, rivers, and ponds, and some remains as groundwater. Apart from this, water is present in the ocean and sea, but that can't be used for drinking purposes. The fresh water can have a wide range of uses, such as drinking, using in industry, taking baths, etc.
The groundwater is heavily used for drinking purposes, as this is considered to be less polluted. River and spring water are getting polluted due to the discharge of polluted water from industries. Ground water is misused, and due to heavy water loss, the amount of water keeps on declining. People from different areas are facing the issue of getting drinking water.
Hence, groundwater is heavily used. The statement is false.
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PLEASE HELP I NEED IT TO BE RIGHT Which of these describes a method in studying plate movements? Select one: a. Observing absence of magnetic rocks in locations that do not match the poles Incorrect b. Match relief elements only on the western side of the Atlantic Ocean c. Recording the spread of the seafloor in the mid-Atlantic region d. Correlate the rotation of Earth to plate movement
Answer:
C. Recording the spread of the seafloor in the mid-Atlantic region
Explanation:
This seems to be the only logical answer. Since we are talking about a method in studying plate tectonics/movements, using evidence of it, seafloor spreading, would be the best idea out of the four.
Seafloor spreading is a geologic process in which tectonic plates—large slabs of Earth's lithosphere—split apart from each other.
Hope this helped! :-)
In a new trial to test the effectiveness for a new type of medicine, why is it necessary for one group to receive a placebo?
Answer:
To serve as control experiment.
Explanation:
Hope it helps.
Where does respiration take place in the cell?
Answer:
The mitochondria is the location in the cell where most of cellular respiration takes place, although a small amount of cellular respiration does take place in the cytoplasm. The mitochondria is often called the power house of the cell because it is involved with making energy for the cell.
Answer:
aerobic respiration happens in the mitochondria.
Two trees have the same girth but different heights. The volume of the shorter tree is estimated to be 142 cubic feet.
How can you use Cavalieri's Principle to find the volume of the second tree?
Answer:
im pretty sure the volume would be equal
Which statement describe a pattern shown in the data?
The data from trial 3 are inconsistent with the dat as from trials 1 and 2
A population contains short plants and tall plants. The short plants are not able to compete with tall plants for sunlight. The tall plants, however, are more susceptible to wind damage. Which type of selection will this population of plants most likely experience? directional selection disruptive selection species selection stabilizing selection
Answer: D
Explanation: A population contains short plants and tall plants. The short plants are not able to compete with tall plants for sunlight. The tall plants, however, are more susceptible to wind damage.
Which type of selection are the plants experiencing?
directional selection
disruptive selection
If tall and small plants coexist in a population. Short plants are unable to compete for sunlight with tall plants. However, tall plants are more vulnerable to wind damage, it experiences stabilizing selection, hence option D is correct.
What is stabilizing selection?A form of natural selection when genetic diversity declines as a population stabilizes on a given trait value.
Disruptive selection's opposite is stabilizing selection. It favors the intermediate variants rather than people with extreme traits.
The more severe phenotypes are typically eliminated through stabilizing selection, which leads to the reproductive success of the average or typical phenotypes.
Therefore, stabilizing selection this population of plants most likely experience.
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Neptune has a diameter of about 30,778 miles. Suppose you were making a
scale model of the solar system with a scale of 1 inch:1,000 miles. How wide
would Neptune be in your model?
A. 30,778 inches
B. 307.78 inches
C. 30.778 inches
0770
Answer:
The answer is C.
Explanation:
Given that the ratio of model to actual is 1 inch : 1000 miles. So in oder to find the wide of Neptune in the model, you have to divide it by 1000 :
[tex]1 \: inch:1000 \: miles[/tex]
[tex]let \: x \: be \: the \: length \: of \: model [/tex]
[tex]x \: inches:30778 \: miles[/tex]
[tex]x = 30778 \div 1000[/tex]
[tex]x = 30.778 \: inches[/tex]
Who first identified nucleic acids, and where were they discovered? Friedrich Meischer discovered nucleic acids in blood cells. Phoebus Levine discovered nucleic acids in plant cells. James Watson and Francis Crick discovered nucleic acids in DNA. Gerardus Johannes Mulder discovered nucleic acids in bacterial cells.
Answer:
Friedrich Miescher discovered nucleic acids in blood cells.
Nuclein was discovered by Friedrich Miescher in 1869
Explanation
In the somewhat early 1880s Albert Kossel further purified the substance and discovered its highly acidic properties. Then he later discovered the nucleobases. In 1889 Richard Altman creates the term nucleic acid. Friedrich Miescher was the first scientist to ever isolate nucleic acid.
Friedrich Meischer was the first who discovered nucleic acids in blood cells. The correct option is A.
Who was Friedrich Meischer?Miescher, Johannes Friedrich, was indeed a Swiss physician and biologist. In 1869, he became the very first researcher to extract nucleic acid.
He also discovered protamine and managed to make several other discoveries.
In the winter of 1868 the adolescent Swiss physician Friedrich Miescher carried out experiments on the chemical composition of leukocytes in the research lab of Felix Hoppe-Seyler at the University of Tubingen, which resulted in the discovery of DNA.
Thus, the correct option is A.
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What is the oxidation hall reaction for 2Mg+O 2 2MgO ?
Answer:
2Mg(s) → 2Mg2+ + 4e. On the other hand, O2 was reduced: its oxidation state goes from 0 to -2. Thus, a reduction half reaction can be written for the O2 as it gains 4 electrons: O2(g) + 4e− → 2O.
Explanation:
what is energy coupling?
Answer:
Energy coupling occurs when the energy produced by one reaction or system is used to drive another reaction or system
Explanation:
During replication, which enzyme works to join newly created DNA strands together along various sites of the DNA macromolecule? RNA ligase DNA polymerase DNA ligase RNA polymerase
Answer:
DNA ligase
Explanation:
please tell me if I'm wrong
Describe some of the basic trends in hominid evolution (brain size, jaw size, language, and manufacture of tools) using at least five (5) sentences.
Answer:
Hominids refers to humans and its closest relatives such as the chimpanzee, gorilla etc.
The basic trends in hominid evolution include:
1. The use of the rear limbs or legs for walking instead of four.
2. There was also an increase in the abuse and discoveries of the terrestrial habitat.
3. Their brain was known to increase in size which made them more sophisticated in thinking and knowledge.
4. They started making tools and used it to hunt wild animals for food.
5. There was a change in their diet as it went from fruits, leaves and other staple foods to the inclusion of a large amount of meat as a source of protein.
What could a dog living now and a cat living thousands of years ago have in
common?
O A. They have some of the same matter.
O B. They have the exact same DNA.
O C. They have the same bone structure.
O D. They have the same amount of energy.
A dog living now and a cat living thousands of years ago have the same bone structure but now differs due to evolution.
What is evolution?"Evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection."Despite the fact that each dog and cat is unique and has a few anatomical differences, they all have the same basic anatomy. The carnivorans separated into two main divisions some 50 million years ago, or earlier, in the Paleocene: caniforms (dog-like) and feliforms (cat-like) (cat-like).Some of the characteristics are changed due to adaptive radiation. What do you mean by bone structure?"The skeletal composition of a human or animal."Both cat and dog have four limbs and are furred.
Hence, the correct option is C. They have the same bone structure.
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Which two characteristics describe all organisms in the domain Eukarya?
O A. Their cells are eukaryotic.
B. Their cell walls lack peptidoglycan.
C. Their cells are prokaryotic.
D. Their cell walls have peptidoglycan.
SUBMIT
Answer:
A and B
Explanation:
Hope this helps U <3
The two characteristics that describe all organisms in the domain Eukarya are :
Their cells are Eukaryotic ( A ) Their cell walls lack peptidoglycan ( B )EukaryaEukarya is a domain which comprises of cell based oragnisms which contain nuclei or membrane organelles which are further divided into kingdoms such as Animalia and Fungi.They posses Eukaryotic cells and their cells walls lack peptidoglycan.
Hence we can conclude that The two characteristics that describe all organisms in the domain Eukarya are :
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Two cities have smokestacks on their plants. Which of the following weather conditions would you expect to create an increase in air pollution dispersal for one of the cities?
The city with a higher air pressure
The city with a higher humidity
The city with a lower wind speed
The city with a lower temperature
Answer:
The city with a higher air pressure
How does studying the cell help you better understand God’s creation?
Answer:
studying the cell helps you see how god has made thing unique
Explanation:
so see the bacics the animal is made by god and you can see the different features that god has put into the cells to help then survive hope this helps you rate 5 star and a thanks if it did
Will Mark Brainliest
Which of the following products were created through marine biotechnology?
Penicillin
Plasma television
Fluorescent dyes
Lithium batteries
Answer:
penicillin is the answer
The chart shows embryos of different animal phyla.
Based on the evidence of their embryos, which pair of phyla are most closely
related?
O A. Echinodermata and Annelida
O B. Mollusca and Arthropoda
O C. Mollusca and Echinodermata
O D. Annelida and Chordata
Answer: B
Explanation:
AP*X
Invertebrates with an exoskeleton, segmented bodies, and paired jointed appendages are known as arthropods.
Molluscan animals have soft bodies that are triploblastic, bilaterally symmetrical, and coelomate. Malacology is the study of Mollusks. They are slow-moving invertebrates with a thin fleshy envelope or mantle that protects the visceral organs.
What are the similarities between Mollusca and Arthropoda?They are triploblastic creatures.They are animals with bilateral symmetry.They're coelomates.They are organized at the organ system level.Thus, we can conclude that option B, Mollusca, and Arthropoda are correct.
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how did the modern atomic theory develop?