Answer:
The concentration of other natural radiatively active atmospheric components, such as methane and nitrous oxide, is increasing as well due to agricultural, industrial and other activities. The concentration of the nitrogen oxides (NO and NO2) and of carbon monoxide (CO) are also increasing.
Explanation:
Which type of body has a core made of ice, dust, and rock?
A. stars
B.meteors
C. comets
D. asteroids
Answer:
C Comets
Explanation:
The PO2 and PCO2 of blood leaving the lungs is kept remarkably constant. This homeostasis is maintained by adjusting the magnitude, or volume, of respiration. Thus, it follows that changes in the magnitude of respiration are influenced by changes in P_O2 and P_CO2 in the body.
Of these two gases, changes in ____(1)___ are the most important in regulating the magnitude of ventilation. A rise in the partial pressure of this gas triggers the body to __(2)____ the magnitude of ventilation. Which of the following statements correctly describes the major mechanism by which this has is monitored?
(1) PO2 or PCO2
(2) decrease or increase
A. Peripheral chemoreceptors in the carotid arteries monitor changes to CO_2 levels in the arterial blood.
B. Peripheral chemoreceptors in the carotid arteries monitor changes to P_CO2 levels in the arterial blood.
C. Central chemoreceptors in the medulla monitor changes to H^+ levels in the extracellular fluid
D. Central chemoreceptors in the medulla monitor changes to CO_2 levels in the extracellular fluid.
Answer:
1. Partial pressure of Carbon dioxide or PCO₂
2. A rise innthe partial pressure of Carbon dioxide triggers the body to increase the magnitude of ventilation.
A. Peripheral chemoreceptors in the carotid arteries monitor changes to CO2 levels in the arterial blood.
Explanation:
Breathing or ventilation refers to the process by which the gases oxygen and carbon dioxide are exchanged in the body through the lungs.
The most important function of breathing is to supply oxygen to the body as well as the removal of the the carbon dioxide produced in the body during respiration. Since oxygen and carbon dioxide are both gases, their concentration in the lungs are given as their partial pressures. The partial pressure of carbon dioxide (PCO2) in the lungs, or its concentration in the body, controls the magnitude or rate of respiration.
The peripheral chemoreceptors located in the carotid arteries detect and monitor changes in the levels of carbon dioxide in the arterial blood. An increase in arterial levels of CO2 when detected, is passed as signals from the peripheral chemoreceptors along nerves to the respiratory groups of the respiratory center, which then induces an increase in the movement of the respiratory muscles especially the diaphragm. Thus, respiration rate is incresed to remove CO2 and bring in oxygen.
Which of these biological communities has permafrost? A. Tundra B. Grassland C. Desert D Forest
Answer:
the tundra biome :)
Explanation:
grass lands aren't very cold
forests aren't cold
the desert is hot
and tundra is super cold
You think that you spot a new planet with your telescope. For the space object to be classified as a planet, you know that it must.
Answer:
D
Explanation:
An example being our solar system. The planets in out solar system orbit around the sun, which is a star. I hope this helps, please mark Brainliest!
HELPPP! I WILL GIVE YOU BRAINLIEST!!!
The diagram below shows a food chain.
Grass Rabbit Fox Bear
What would happen if human activity reduced the rabbit population?
A.
The bear population would increase.
B.
The grass population would decrease.
C.
The fox population would decrease.
D.
The fox population would increase.
Answer:
c, because the fox wouldnt have enough food
Explanation:
Answer:
C. The fox population would decrease.
Explanation:
It's a very direct cause and effect situation. Because the fox is a consumer of the rabbit, the fox would decrease after the rabbit population decrease, the bear would be indirectly affected.
Why do plant cells need a cell wall and chloroplasts but animal cells do not?
Answer:
Plant cell needs cell wall whereas animal cell do not because the plants need rigid structure so that they can grow up and out . ... So animal cells can have various shapes, but plant cells only have the shapes of their cell walls.
Explanation:
Thats because Plant cell needs cell wall whereas animal cell do not because the plants need rigid structure so that they can grow up and out . ... So animal cells can have various shapes, but plant cells only have the shapes of their cell walls.
Bats and birds eating insects at different times of day is an example of (1 point)
O survival of the fittest.
O resource partitioning.
O competitive exclusion.
O natural selection.
Bats and birds eating insects at different times of day is an example of Resource Partitioning. So, the correct option is B.
What is Resource Partitioning?
Resource partitioning or niche differentiation is a process of natural selection that will force competitors to use resources differently in such a way as to avoid competition between species. Resource partitioning causes the co-existence of species.
If bats and birds eat insects at different times of the day, there is no survival of the fittest. Competitive exclusion states that no two species can co-exist in the same niche for a long time.
Therefore, bats and birds eating insects at different times of day is an example of Resource Partitioning.
To learn more about Resource Partitioning, refer to the link :
https://brainly.com/question/15686970
Greenhouses are designed to capture the energy of the sun.
True
False
i believe the answer is true ^^
Answer: true?
Explanation:
In the daytime, sunlight shines into the greenhouse and warms the plants and air inside. At nighttime, it's colder outside, but the greenhouse stays pretty warm inside. That's because the glass walls of the greenhouse trap the Sun's heat. The greenhouse effect works much the same way on Earth.
Move this lichen
to where it belongs within the process of primary succession
Pls help 15 points
Answer:
1
Explanation:
Lichen are usually the first thing to grow on bare rock, making them a pioneer species. Fun fact, you can use lichen to determine if the air quality in an ecosystem is polluted.
Hope this helped :)
4.
(06.02 LC)
Which of the following is a specialized cell that can recognize a hormone's chemical structure? (5 points)
Nerve cell
Smooth cell
Striped cell
Target cell
5.
(06.02 MC)
What happens when blood glucose levels rise above normal? (5 points)
The pancreas releases insulin.
The pancreas releases glucagon.
The pituitary gland releases insulin.
The pituitary gland releases glucagon.
6.
(06.03 LC)
Which process describes the passing of nutrient molecules from the digestive system into the blood? (5 points)
Absorption
Chemical
Elimination
Mechanical
7.
(06.03 LC)
Which of the following is a part of the digestive system? (5 points)
Capillary
Diaphragm
Ovary
Saliva
8.
(06.03 MC)
The following flow diagram shows the various steps of elimination of waste through urine. There is an error in one of the steps. (5 points)
A flow diagram is shown with three rectangular boxes. Each box from top to bottom is labeled Step 1, Step 2, Step 3. The text written inside the top rectangular box reads, Urine flows from the ureters to the kidneys. The text written inside the middle rectangular box reads, The Ureters carry urine to the urinary bladder. The text written inside the bottommost rectangular box reads, Urine leaves the body through urethra. The title of the flow diagram is Elimination of Waste.
What is the error in the diagram?
Step 1 should be urine flows from the kidneys to the ureters.
Step 2 should be the kidneys carry urine to the bladder.
Step 2 should be the ureters carry urine to the urethra.
Step 3 should be urine leaves the body through kidneys.
9.
(06.04 LC)
Which of the following is a lower chamber of the heart? (5 points)
Atrium
Pacemaker
Septum
Ventricle
10.
(06.04 MC)
Which of the following describes how the circulatory and the digestive systems help to maintain homeostasis by working together? (5 points)
By delivering oxygen to cells
By having cells that fight infections
By delivering nutrients from food to cells
By carrying waste to the kidneys
Explanation:
Which of the following is a specialized cell that can recognize a hormone's chemical structure? (5 points)
Nerve cell
Smooth cell
Striped cell
Target cell
ans : nerve cell
6.
Which of the following best explains how homologous structures show evidence of evolution?
Which is the best way of comparing two or more organisms
A. Homologous structures
B. DNA
C. Vestigial Structures
D. Fossils
Answer:
its b
Explanation:
Please select the word from the list that best fits the definition
The path followed by an object in space around another object in space
A-orbit
B-solstice
C-equinox
Answer:
what is it bro i need it too
Explanation:
Answer:
i think it's A.
Explanation:
i hope i'm not to late and that this helps-
Why do we care about how the climate changed in the past? A.Scientists are curious about how fossils are made. B.We gain information about the movement of tectonic plates.
C. It gives us more information about how the climate is changing now and might change in the
future.
D. I keep asking myself the same question.
Answer:
C
Explanation:
It can help scientists predict how climate change will occur in the future and how can they stop it
are atrophies considered producers or decomposers
Answer:
decomposers
Explanation:
what enzyme has both structural and enzymatic traits
Describe how you
lmprove a soil which has
tost its nutrients
Answer:
Reduce Inversion Tillage and Soil Traffic. Excessive tillage is harmful to soil health in a number of ways.Increase Organic Matter Inputs.Reduce Pesticide Use and Provide Habitat for Beneficial Organisms
Hope thishelps!!
Explanation:
the effects of toxic chemicals are minimized by which following three mechanisms
Answer:
Metabolic degradation, excretion, and repair.
Explanation:
How do I know how much energy is availably in each level of the energy pyramid?
Answer:
What Exactly Do Energy Pyramids Have to Do With Energy? Energy pyramids show a very cool trend: Each level only gets 10% of the energy from the level below it.
Explanation:
What type of macromolecule would be responsible for giving a child brown eyes when both of his parents have blue eyes?
A. Carbohydrates; provide short term energy
B. Macromolecules; provides all the structures with nutrients
C. Nucleic acids; provides the cells with genetic information responsible for making brown eyes
D.Lipids; provides long term energy
Ehlers-Danlos syndrome is a genetic disorder that weakens the binding properties of connective tissues. What would most likely be one of the symptoms of this disorder?
A.
Increased joint mobility
B.
Decreased brain activity
C.
Decreased bone density
D.
Increased muscle size
Answer:
Increased Joint Mobility
adasdaw wa awd awdadasdadwd
Which of the following are steps of the inquiry process?
Check all that apply.
A. Summary
B. Prediction
C. Fabrication
D. Observation
E. Invention
ARNEF. Question
Answer:
Understand the problem.
Make a plan.
Carry out the plan.
Look back and reflect.
Explanation:
The picture below shows the bone structures of whale and bird.
Picture shows similar bone structures of whale and bird.
Based on the diagram, which of these statements is correct about whales and birds? (2 points)
Group of answer choices
They use their limbs to catch their prey.
They move in the same manner.
They have similar food habits.
I had almost the same question on one of my quizzes but it had one other answer. Mine was,
"The picture below shows the bone structures of whale and bird.
Picture shows similar bone structures of whale and bird.
Based on the diagram, which of these statements is correct about whales and birds?
a ) They have similar food habits.
b ) They move in the same manner.
c ) They share a common ancestor.
d ) They use their limbs to catch their prey."
After doing some research, I found that the correct answer was that they share a common ancestor.
List at least three ways the structure of human teeth serve the function of eating meat and plant material
Answer:
Yes it help in this function
Break down (Just like I'm having one)
Chew (My account was chewed down to this)
Rip (Rest in peace my banned account that I had expert on)
In other words, B.C.R this is a real answer. So dont go reporting me
Which statement about natural selection is true? (1 point)
O Natural selection only happens to animals
Natural selection produces animals fit for their environment.
O Natural selection produces animals that are faster and stronger.
O Evolution causes natural selection.
Answer:
B
Explanation:
The whole point of natural selection is for animals to compete to survive in that specific environment
Hope this helps!
In this exercise we have to use our knowledge of biology to identify the true alternative, so we have:
The correct anwser is Natural selection produces animals fit for their environment or letter B.
How does the process of natural selection happen?Natural selection acts on the phenotype, or observable characteristics of an organism, in such a way that individuals with favorable phenotypes are more likely to survive and reproduce than those with less favorable phenotypes.
So we can say that the main reason for natural selection is due to the competition of the animal to survive in a certain environment.
See more about natural selection at brainly.com/question/1131859
what kind of energy transformation takes place when plants perform photosynthesis to produce glucose molecules
Answer:
electrical energy
Explanation:
electrical energy
A generator converts kinetic energy into electrical energy.
36. In this Phylogenetic tree the newest evolutionary branch is between
(1 point)
dinosaurs and birds
O dinosaurs and frogs
O humans and sharks
O humans and whales
A group of students is learning to identify each organ of the human body by looking at images. The students identify the stomach. Which statement best describes the stomach?
The stomach stores food for energy.
B. The stomach breaks food into small pieces so we can breathe.
C. The stomach carries bits of food to different parts of the body.
D. The stomach breaks food into small particles.
Answer:
D
Explanation:
The acids in your stomach break down the food you eat
All of the following factors can cause famines except
А
the failure of food production to keep pace with population growth
B.
distribution problems caused by political turmoil
С
new, higher-yield crops
D
crop failure brought on by sustained drought
Answer:
C: new, higher-yield crops
Explanation:
All of the other answers are problems while C is a positive scenario.