Answer:
This eventual process of speciation by natural selection is illustrated by a sketch ... The integration of genetics with models of natural selection shed tremendous ... processes which cause adaptation within species also tend to create new species. ... Darwin, C. On The Origin of Species by Means of Natural Selection,
Explanation:
What happens to a newly created
mountain as a result of weathering and erosion?
Answer:
Recent research has led to important new insights into how these most ... Mountains are created and shaped, it appears, not only by the movements of the ... uplift to a gradual slide into "old age" caused by slow but persistent erosion. ... Convergence of tectonic plates generally occurs in one of two ways.
Explanation:
Answer:
it desolves
Explanation:
i dont really knoe (=
which statement describes p waves
Answer:
There’s no picture
Explanation:
Answer:
They Vibrate From Side To Side, Hope this helps!!
Explanation:
Easy 15 points! Please put an explanation
How many atoms of oxygen are left after synthesizing oxygen molecules?
Answer:
Explanation:
2.
1. how many chambers does the human heart have?
2. what close the valves in the heart and why should they do this?
3. what do we call a pulse?
4. describe blood capillaries
Your heart has four separate chambers that pump blood, two on the right side and two on the left.
2. When the ventricle relaxes, the aortic valve closes to prevent blood from flowing back into the ventricle. When the aortic valve is not working properly, it can interfere with blood flow and cause the heart to strain to send blood to the rest of the body.
3. In medicine, a person's pulse is a pressure wave caused by the expansion of the arteries as a result of the circulation of blood pumped by the heart.
4. Capillaries are tiny vessels that branch out from arterioles to form networks around body cells.
Capillaries are very tiny blood vessels — so small that a single red blood cell can barely fit through them.
hope this help! ^^
What time period is called the Age of Mammals?
a.
the Precambrian time
c.
the Paleozoic era
b.
the Mesozoic era
d.
the Cenozoic era
Answer:
Cenozoic Era
Explanation:
Answer:D
Its the Cenozic era
Margo was adopted when she was an infant. Her adoptive parents' intelligence test scores are in the average range, while her biological parents have test scores well above average. When Margo is 30, what can we predict about her performance on an intelligence test?
Answer: It will be more similar to her biological parents test scores
Explanation:
Both primary and secondary succession start by producing soil. True False
Answer:
True
Explanation:
Answer: false
Explanation:
is Fat around organs
structure of cell membranes
protection
chemical messenger
Answer:
protection
Explanation:
The "fat" around the organs is called the "visceral adipose tissue." Its primary function is to "protect" the organs it encloses from injury. It also keeps the person warm especially when exposed to cold environments. Besides this, it also serves as a storage area for your calories in the body. Fat is not completely harmful as most people think.
This is the reason why it is not good to lose so much weight or become too skinny because losing some fat may be harmful to your organ's protection and heat regulation.
Under what conditions can aerobic respiration be used as a means to generate the ATP needed to carry out cellular processes? (4 points)
Oxygen is absent; electron transport chain is not used.
Oxygen is absent; electron transport chain is used.
Oxygen is present; electron transport chain is not used.
oxygen is present; election transport chain is used,
Answer: oxygen is present; electron transport chain is used
Explanation:
Explain human impacts on the environment. Give examples.
Answer:
what kinda impact the bad or good
Explanation:
The question didnt make sense
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Four examples of the human made environment are buildings,parks,industries and bridges.
Label the part of the cell membrane
Answer:
head molecule, a phosphate molecule, a glycerol and two fatty acid chain
Answer:
molecule, a phosphate molecule, a glycerol and two fatty acid chain
Explanation:
Every population is part of a ___?
Help plz!! I'll mark brainliest!
Answer:
In statistics, a population is the entire pool from which a statistical sample is drawn. A population may refer to an entire group of people, objects, events, hospital visits, or measurements. A population can thus be said to be an aggregate observation of subjects grouped together by a common feature.
Cell Questions part 2!
Will give brainlist
Answer:
12 is b
Explanation: ribosoms combine amino acids
Scientists count the number of organisms in the tallgrass prairie. Which trophic level would you
expect to contain the smallest number of organisms?
A. Producers
B. Primary consumers
C. Secondary consumers
D. Tertiary consumers
Scientists count the number of organisms in the tallgrass prairie. The trophic level would you expect to contain the smallest number of organisms is Tertiary consumers. Thus, option D is correct.
Who are known as producers?The organisms that are capable of making their food like plants are called producers. The organisms that feed on the producers are known as primary consumers. The primary consumers include all kinds of insects, caterpillars, termites, etc.
Tussock larvae would be a primary consumer. The organisms that feed on the primary consumers are termed as Secondary consumers. In this example, the birds are eating the primary consumer i.e tussock larvae, hence birds would be the secondary consumers.
Therefore, Scientists count the number of organisms in the tallgrass prairie. The trophic level would you expect to contain the smallest number of organisms is Tertiary consumers. Thus, option D is correct.
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If you mix substance x and substance y to form Substance z Substance is an example of what?
Help help I’m taking a test and need answers please
Answer:
X is a compound because elements react to form compounds.
Difference between elements and compounds are:
1. Element consists of one kind of atoms whereas compounds consists of one kind of molecule made up of two or more types of atoms.
2. Element cannot be broken into simpler substances but compounds can be broken into simpler substances.Explanation:
Will give brainest!!!!
What part of the brain controls the activity level in the body that makes us excited during a competition?
a) The pheromones
b) The adrenal glands
c) The reticular formation
d) The pituitary gland
Answer:
adrenal glands
Explanation:
they produce adrenaline
URGENT!!
In addition to water, which of the following substances are polar?
A. Oil
B. Sharpie Marker
C. Butter
D. Nail Polish
E. Sugar
Answer:
Sugar
Explanation:
Sugar is the only polar substance here
Answer:
E: sugar
Explanation:
Fats and oils are nonpolar so its not oils or butter.
Most inedible or permanent inks like sharpie are nonpolar so its not sharpies.
Nail polish has a number of ingredients one is resin, which is nonpolar. The answer is sugar.
Use the first letter of each term to match it to the correct statement
Options - Tulip, Crocus, Forcing,Daffodil,Stratification
16)_____causing the flower to bloom out of season
17)_____must be planted in pot with flat side facing out
18)_____must be planted in pot with half the bulb exposed
19)_____imitates the winter season by using refrigeration
20)___must be planted in pot covered with one inch of soil
HELPPPPPP
Answer:
16.) Forcing
17.) Crocus
18.) daffodil
19.) stratification
20.) tulip
Explanation:
Which of the following best describes the impact that infectious agents in one's surroundings can have on the health of an individual?
a
They can bind with T cells and cause swelling and inflammation.
b
They can attack within cells and elicit a cell-mediated immune response.
c
They can destroy the body's ability to fight infection after repeated exposure.
d
They can produce histamine and prevent body cells from reproducing.
The impact that infectious agents in one's surroundings can have on the health of an individual is they can produce histamine and prevent body cells from reproducing.
What are the functions of histamine?Histamine is an important chemical that has a role in a number of different bodily processes. It stimulates gastric acid secretion, plays a role in inflammation, dilates blood vessels, affects muscle contractions.
Histamine is a central mediator released from mast cells through allergic reactions. Histamine plays a role in airway obstruction via smooth muscle contraction, bronchial secretion, and airway mucosal edema.
Histamine regulates a plethora of pathophysiological and physiological processes, such as secretion of gastric acid, inflammation, and the regulation of vasodilatation and bronchoconstriction.
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What function are stomach cells adapted for
Answer:
The stomach is J-shaped and it can expand to temporarily store food. Partial digestion of the food takes place here. The churning action of the stomach muscles physically breaks down the food. The stomach releases acids and enzymes for the chemical breakdown of food.
Explanation:
NASA scientists have discovered a new planet which is approximately the same size as Earth but the mass is half as much as Earth’s. How would the weight of an astronaut on this new planet compare to his weight on Earth?
Answer:
Weight will decrease
Explanation:
1kg=10N
1/2kg=10/2N
0.5kg=5N
the astronauts weight will be reduced to half of it
hope it helps:)
What are two ways to increase the energy of a wave?
•Increase the wavelength and increase the frequency
Increase the amplitude and increase the frequency
Decrease the amplitude and increase the wavelength
Increase the speed and decrease the frequency
The two ways to increase the energy of a wave are increase the amplitude and increase the frequency. The correct option is B.
What is a wave?A wave is a propagating dynamic disturbance of one or more quantities in physics, mathematics, and related fields.
Periodic waves occur when quantities oscillate repeatedly about an equilibrium value at some frequency.
The amplitude and frequency of a wave are related in such a way that they are inversely proportional. With increasing frequency, the amplitude decreases. As the frequency decreases, the amplitude increases.
The amount of energy in a wave is determined by its height, wavelength, and the distance over which it breaks.
When equal wavelengths are used, a wave with a larger amplitude will release more energy when it returns to sea level than a wave with a smaller amplitude.
Thus, the correct option is B.
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What process in prophase 1 causes DNA to switch
places on separate chromosomes?
Explanation:
Recombination Occurs During the Prolonged Prophase of Meiosis I. Prophase I is the longest and arguably most important segment of meiosis, because recombination occurs during this interval. For many years, cytologists have divided prophase I into multiple segments, based upon the appearance of the meiotic chromosomes.
Hope this helps!
What makes up the highest percentage of soil composition?
A.) Mineral matter
B.) Water
C.) Air
D.) Organic matter
Answer:
D
Explanation:
^
The one that makes up the highest percentage of soil composition is mineral matter. The correct option is A.
What is soil composition?In soil science, a soil type is a taxonomic unit. A distinct soil type is formed by all soils that share a specific set of well-defined properties.
Soil type is a technical term for soil classification, which is the science of systematic categorization of soils. Every soil on the planet belongs to a specific soil type.
The composition of the soil is an important aspect of nutrient management. Soil water is what readily provides nutrients for plant uptake, whereas soil minerals and organic matter hold and store nutrients.
A typical soil contains about 45% mineral matter, 5% organic matter, 20-30% water, and 20-30% air. These percentages are, at best, broad strokes.
Thus, the correct option is A.
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what is the respiration through skin called?
Answer:
Cutaneous respiration, or cutaneous gas exchange
Explanation:
Answer:
Cutaneous respiration
Explanation:
is a form of respiration in which gas exchange occurs across the skin
As many as 30 thousand ____ _______ become entangled in lost or discarded fishing nets or cargo straps each year.
Answer:
As many as 30 thousand fur seals become entangled in lost or discarded fishing nets or cargo straps each year.
Explanation:
Human activities cause many damages to marine mammals in general. One of these activities is fishery. The nests are intercepting the migratory routes of animals or are floating free in the sea after being discarded. They are extremely strong, so whenever animals get stuck on them, they might carry them for months or years, affecting their diving, foraging, feeding, and reproductive behavior. These nets might hurt the animals´ skin, producing a wound that will probably get infected.
A few years ago, at least 50,000 northern fur seals died per year after getting stuck in fishing nets. The populations of these animals decreased sharply, affecting their reproductive and growth rates. In the present, due to the decrease in their population size, the number of dead animals is around 30,000 per year. This reduction in death is only because there are much fewer animals every year.
3. What temperature and density changes occur in a fluid or gas material that cause convection to occur?
Answer:
There is an increase in density and a corresponding increase in the temperature of the fluid
Explanation:
The temperature and density changes occur in a fluid or gas material that cause convection to occur include increase in density and a corresponding increase in the temperature of the fluid.
This is because convection involves the movement of fluids from a hotter area to a colder area and hot fluids usually have a lower density.
Does anybody know what a Non-environmental factor that triggers mutation? Give me one example
Answer:
A mutation can occur when mistakes are made during DNA replication.
Explanation:
Numerous factors may result in mutations. Some mutations appear to occur on their own, without any environmental factor. They can happen when transcription or replication errors are created in DNA.
What is mutation?The alteration or modification of a person's nucleic acid or DNA sequence is known as a mutation.
This is a normal process that happens because mutagens lead to mutation. Additionally, for certain objectives, man-made mutations can be created to change the gene sequences.
There are many different kinds of mutations, including chromosomal mutations that change the structure of chromosomes and somatic mutations that impact body cells.
Therefore, mutagens, which may be both environmental and non-environmental, can trigger the mutation in DNA.
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who is 27tb2926 and why is the person so hard to find
Answer:
I honestly have no clue. Sorry
Explanation:
7. Explain what makes proteins the most diverse
macromolecule.
8. List which macromolecule is not obtained from our
food and where we do get it from.
Explanation:
A protein is a linear molecule comprised of amino acids.The sequence of a protein's amino acids is determined by the sequence of bases in the DNA coding for the synthesis of this protein.