The chemical equation below summarizes the burning of a fossil fuel.
Fossil fuel + oxygen gas →
+ water + heat
Which substance belongs in the blank in the equation?
O A. Lactic acid
O B. Carbon dioxide
O C. Nitrogen
D. Ammonia
Answer: B. Carbon Dioxide
Explanation:
Fossil fuel can release methane and other hydrocarbon. The reaction is processed between methane and oxygen in the air. When this reaction takes place the result is Carbon dioxide, water, and lots of energy (heat)
Hope this helps!
What is the term for deep cold waters that replace warm surface waters?
Answer: This process is known as upwelling
Explanation:
Describe the role of ATP
Answer:
the main role of ATP is to provide energy
Explanation:
When we look at stars, we notice that some appear brighter than others. Sirius looks much brighter than Rigel, but is it really brighter? Or is Sirius much closer to Earth, giving it the appearance of being brighter? Actually, Sirius is about one hundred times closer to Earth than Rigel. If the two stars were the same distance from Earth, Rigel would appear much brighter. -We use two terms to reference the brightness of a star: absolute magnitude and apparent magnitude. Absolute magnitude is the measure of the light given off by a star, while apparent magnitude refers to the amount of light received on Earth. The color of a star indicates its temperature. Blue-white stars are very hot, while orange-red stars are relatively cool. In the early 1900's Ejnar Hertzsprung and Henry Russell noticed that the higher the temperature of a star, the greater the star’s absolute magnitude. They developed a graph that depicts this relationship called the H-R diagram. Most known stars fit into a diagonal band that runs from the upper left to the lower right of the diagram. This diagonal band is called the main sequence. About 90% of all stars are main sequence stars. Most stars are currently classified using the letters O, B, A, F, G, K, and M, where O stars are the hottest and the letter sequence indicates successively cooler stars down to the coolest M class. Betelgeuse is in the red spectral class. It is one of the largest of stars with extremely high luminosity although it has a relatively low surface temperature. How would Betelgeuse be classified?
A. Giant
B. Supergiant
C. White Dwarf
D. Main Sequence
When we look at stars, we notice that some appear brighter than others. Sirius looks much brighter than Rigel, but is it really brighter Or is Sirius much closer to Earth, giving it the appearance of being brighter
Actually, Sirius is about one hundred times closer to Earth than Rigel. If the two stars were the same distance from Earth, Rigel would appear much brighter.
We use two terms to reference the brightness of a star: absolute magnitude and apparent magnitude. Absolute magnitude is the measure of the light given off by a star, while apparent magnitude refers to the amount of light received on Earth.
The color of a star indicates its temperature. Blue-white stars are very hot, while orange-red stars relatively cool. In the year of 1900's Ejnar hertzsprung and Henry Russell noticed that that the higher temperature of a star, the greater's the star absolute magnitude. They developed a graph that that depicts this relationship called H-R diagram.
Most knows stars fit into a diagonal band that runs form the upper left to the lower right of the diagram. This diagonal band is called the main sequence. About 90% of all stars are makn sequence stars.
Most stars are currently classified using the letters O,B,A,F,G,K and M, where O stars are the hottest and letter sequence indicates successively cooler stars down to the coolest M class.
Betelgeuse is the red spectral class. It is one of the largest of stars with extremely high luminosity although it has a relatively low surface temperature. Betelgeuse can be classified as supergiant. Thus option b is correct.
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Hitchhiker's thumb (H) is dominant to no hitchhiker's thumb (h). A woman who does not have hitchhiker's thumb marries a man who is heterozygous for hitchhiker's thumb. What is true of their offspring?
Answer:
There is a 50% chance the kids will have Hitchhiker's thumb
Explanation:
Because Hitchhiker's thumb is dominant and the woman doesn't have it it's safe to assume her genes for it are hh. In a punnet square it would look like
h h
H | Hh Hh
h | hh hh
If that makes any sense I hope it does
Point is, 2 of the 4 boxes would say Hh and the other two would have hh
In which list are the levels of organization in the human digestive system shown from lowest to highest?
Answer: I believe it would be A: epithelial cell, intestinal lining, intestine, digestive system, human body.
Hope this helps!!
Answer:
A—
Cell
Lining
Intestine
System
Body
Explanation:
This is from smallest to largest. In the system.
How does disease affect blood pressure
Explanation:
The body has lots of mechanisms that can control the blood pressure, plus, changing the amount of blood the heart pumps, the diameter of the arteries, and volume of blood in the bloodstream. When a disease causes blood pressure to stay high, low, or in between, problems can arise.
why do animals and plants need nitrogen
Answer:
They need Nitrogen to make Amino acid, DNA but the nitrogen in the atmosphere can't be used directly. Some nitrogen fixing bacteria fix it then it is able to use for plants and animals.
hope it helps!
Answer:
Plants and Animals need Nirogen and its Sufficent
Explanation:
Plants need Nitrogen especially Crops because they give protein with the help of nitrogen by the help of Rhizobium Bacteria.
With This Protein, Animals ( Herbivores) eat this for energy which contains nitrogen
Sleet is precipitation made of small particles of ice. How does sleet form?
Answer:
Sleet is pellets of ice that form when snow falls into a warm layer and melts into rain. The rain then falls into a freezing layer of air that is deep enough to refreeze the raindrops into pellets. Sometimes the snow does not completely melt and the partially melted snowflakes refreeze into snow pellets.:
hope this helps!
Answer:
There must be a layer of air near the ground whose temperature is below freezing, where water turns to ice. Above this layer of freezing air must be a layer of warmer air. As snow falls through the warm air, it melts or partially melts into raindrops. It forms sleet before it reaches the ground.
Explanation:
:3
Jacque is hiking in the mountains and sees a very large and colorful rock layer. It looks different than the surrounding rock layers. What is the best way for Jacque to investigate what the environment was like when this rock layer was deposited?
Jacque could measure the height of the rock layer.
Jacque could check if the rock layer has fossils in it.
Jacque could look at the color of the surrounding rock layers.
Jacque could chip off a chunk of rock from the rock layer and smell it.
Answer:
Check if the rock layer has fossils in it.
Explanation:
The rock layer from the inside out and the fossils will tell you how old the rock is.
Jacque could check if the rock layer has fossils in it, as the presence and types of fossils can often provide clues about the environment in which they were formed.
What can a rock layer tell about the environment?To investigate what the environment was like when a rock layer was deposited, there are several approaches that can be taken:
Look for clues in the rock layer itself: The rock layer itself can often provide clues about the environment in which it was formed. For example, the presence of certain minerals or fossil types can indicate the presence of specific conditions, such as warm or cold temperatures, or a marine or terrestrial environment.
Examine the surrounding rock layers: The rock layers above and below the rock layer of interest can provide additional context and clues about the environment. For example, if the surrounding layers are sedimentary rocks, such as sandstone or shale, it may indicate that the area was once covered by water.
Use rock dating techniques: As mentioned earlier, techniques like radiometric dating and relative dating can help determine the age of a rock layer and provide insight into the environment that existed at the time it was formed.
Conduct additional analyses: Depending on the type of rock and the questions being asked, it may be possible to conduct more detailed analyses, such as chemical or isotopic analyses, to gather further information about the conditions under which the rock formed.
Consider the current location of the rock layer: The current location of the rock layer can also provide clues about the environment in which it was formed. For example, if the rock layer is found in a mountain range, it may have formed in a tectonically active area, while a rock layer found in a flat, low-lying area may have formed in a more stable environment.
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When two liquids have the same osmotic pressure they're said to be
Question 6 options:
hypotonic.
hypertonic.
isotonic.
diffuse.
Answer:
Isotonic
Explanation:
Answer: isotonic is the Penn Foster test answer
What can scientists infer about the period of very early Earth from the fossilized remains of trees found under a lake?
Answer:There is a theory that terrestrial plants evolved from aquatic plants through a process of natural selection. Thus, by finding fossils of plants under the river, scientists may conclude that this theory is correct and that these fossils represent the ancestors of terrestrial plants.
The emergence of plants that survive on earth is a very important milestone for the planet, it is believed that these plants have evolved from green algae called Chlorophyta that have survived in marshy areas that had alternating periods of flooding and drought.Then the discovery of these fossils, through scientific experiments may conclude that the theory is correct
Explanation:
Answer:
The fossil record is the record of life on earth preserved in rock as fossils. The fossil record provides evidence of where types of plants and animals lived, how long they lived, how they died, and how they changed. It also tells us about Earth’s early environment and how it changed. The fossil record helps determine the age of rock formations by looking at how deep the fossils are buried in the rock. When a fossil is found above another fossil in a rock formation, the deeper fossil are considered older.
What can scientists infer about the period of very early Earth from the fossilized remains of trees found under a lake?
Explanation:
A) The fish ate the trees.X
B) The dinosaurs ate trees.X
C) The area was once a forest. ****************************** C
D) The atmosphere lacked oxygen.X
Which ecosystem is found mainly in warm tropical waters?coral reefs or kelp forest
Answer:
coral reefs
Explanation:
they thrive better in warmer waters.
In plants, asexual reproduction is most likely to occur through the:
Answer:
Roots
Explanation:
The cells split into two of the same copy of itself (unless a bug has occurred, in which case a malform will occur), and the two copies are known as the offspring. In this case, only one pair of genes is inherited, and will continue to be the pair that is passed down (if no malform occurs).
~
What is the difference between a heart and a brain?
7 paragraph response.
WILL MARK BRAINLIEST!
Which entry is in the wrong position in the table?
Explanation:
What is the entries you don't have enough stuff for us to find out an answer
Answer:
Its B allergies
Explanation:
What is the effect of wildfires on biodiversity?
Answer:
it damages the earth's atmosphere and harm animals and the air we breath
Answer:
its a
Explanation:
well the answer makes sense because it might decrease some trees but it also gets rid of the bad and rotting trees so more vegetation can grow
The picture shows a girl with a widow's peak.
The girl has a widow's peak because of her
genes, which are located in chromosomes in her cells' nuclei.
hormones, which are passed on from previous generations.
nutrition, and indicates her needs are met.
environment, in which it is an advantage.
how does building a solar power plant slow down resource depletion?
A. It increase the supply of electricity from alternative sources
B. It reduces the cost of electricity from alternative sources
C. It reduces the demand for electricity overall
D. It increases the consumption of electricity from coal
Answer: A
Explanation:
A. It increase the supply of electricity from alternative sources
Answer:
A. It increase the supply of electricity from alternative sources
In cellular respiration, where do the high-energy electrons that move through the electron transport chain originate?
Answer:
The electrons are carried to the ECT by NADH and FADH+, which are reduced during glycolysis, pyruvate oxidation, and the Krebs cycle.
The graph below shows the mass of plants as succession progresses. What is the
cause of the drop in the moss population?
Pine
Trees
Shrubs
Mass of Plants
Oak
Trees
Grasses
Mosses
Time
The formation of the climax community of the forest
Competition for light and resources with grasses
A lack of soil nutrients in the environment
Competition for light and resources with the oak tree
Answer:
Competition for light and resources with grasses
Explanation:
Mosses are small, flat brioftas that have no conductive vases, flowers, fruits and seeds. In a situation where a region has an intense density of trees as shown in the question above, mosses may be left with a limited amount of resources necessary for their survival, which will decrease their population. As a result, the moss will compete with other plant species.
In relation to the question above, the population of mosses would decline due to the competition for resources with grasses, this is because grasses have advantages in the absorption of resources, due to their biology.
Which descriptions refer to cirrus clouds? Select three options.
Answer:
wispy, high altitiudes, and ice crystals
Explanation:
Answer:
C
Explanation:
In Kingdom Animalia, there are is a wide variety of organisms such as humans, reptiles, fish, birds, insects, and mammals. These organisms are different from each other in many ways. Why would scientists classify all of these organisms into the same Kingdom?
All living organisms are classified into groups based on very basic, shared characteristics. Organisms within each group are then further divided into smaller groups.
Explanation:
Answer:
D :)
Explanation:
Losing 100 orangutans a week is an astonishing number. Within your lifetime they could become extinct in the wild because of human impact. We use palm sugar in many products consumed and other things. Do you feel that it could be said we have a parasitic relationship with orangutans? Defend your answer.
if the orangutans eat the fruits, basically their place of residence is their only means of obtaining and if the human continues to cut down trees and destroy forests, the fruits will be lost and the monkeys will starve and thus could become extinct.
hope this help (>-<)
What is the speed of a wave with a frequency of 6oHz and a wavelength of 20m
Answer:
speed = 1200 m/s
Explanation:
given data
frequency = 60 Hz
wavelength = 20 m
solution
we get here speed of a wave that is express as
speed = Frequency × wavelength ...............................1
put here value and we get speed
speed = 60 × 20
speed = 1200
so speed of a wave is 1200 m/s
How do animals respond to stimuli?
Please help this is my last assignment for the year
What is the largest object in the image above??
Answer:
The one to the extreme right
Explanation:
The graph shows the progression of size getting larger from left to right
Marvin blows up a balloon but lets go of it. The air inside is released and the balloon goes up into the air. What best describes what happens?
Answer:
The thrust of the air propels the balloon in the opposite direction
Explanation:
Answer:the thrust goes the opposite direction
Explanation: the air is blowing one way while the push of force thrusts the balloon the other way
PLEASE HELP. 20 POINTS
Alpha-1 is a hereditary disorder that affects the lungs. In order for the disease to develop, a child must inherit one recessive allele from each parent. Suppose Caryn’s mother has Alpha-1 and her father carries only one recessive allele. Which of the following claim best describes Caryn’s situation?
Caryn has no chance of developing Alpha-1.
Caryn has no chance of being a carrier for Alpha-1.
Caryn has a 50 percent chance of developing Alpha-1.
Caryn has a 100 percent chance of developing Alpha-1.
Caryn has a 50 percent chance of developing Alpha-1.
Answer:
50 percent chance
Explanation:
find the number of atp molecules used in the beginning of glycolysis
Answer:
uses 2 atp
Explanation:
uses 2 atp, creates 4 atp and 2 nadh
