The Montreal Protocol limited the world's use of chemicals like Chlorofluorocarbons (CFCs). Which sentence best indicates that the Montreal
Protocol led to improvements in the thickness of the ozone layer?
When ozone was first measured by satellite In 1979, the average concentration above Antarctica was 225 Dobson units (DU). In 1989, when the
Montreal Protocol took effect, it was 127 DU. The lowest level was 92 DU In 1994. By 2019, the value was back up to 167 DU.
Excerpt courtesy of NASA
Answers
Answer:
well it isn't the last sentence, but that's all i got for you, sorry bro (i got it wrong on plato/edmentum). i think the first one might be a better answer if i'm looking at this correctly. sorry that i'm not really that much help!
Explanation:
The sentence that best indicates the Montreal protocol led to improvements in the thickness of the ozone layer is : In 1989 when the Montreal protocol took effect, it was 127 DU ( second statement )
The Montreal protocol was an international agreement made and signed in 1987 by 46 signatory Governments The protocol was made to prevent the production and release of Ozone depleting substances like Chlorofluorocarbons into the atmosphere.
Hence from the statements listed above the statement that clearly signifies the importance of the Montreal protocol is In 1989 ( after the agreement took effect )is that the value of DU was 127 DU in 1989 .
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Related Questions
Can you please help me
Answers
2. All living things are made of cells
3. Grams, mass
Hope that helps.
What do microbiologists do ? why are their contributions important to science ?
Answers
Answer:
Microbiologists study microbes, or microorganisms. They investigate some of the simplest and oldest forms of life on Earth, such as bacteria. Studying these organisms can help scientists trace the evolutionary lineage of more complex organisms. Microbiologists' research is important in developing treatments for infectious diseases that bacteria and other microorganisms cause.
Explanation:
same answer in Edmentum just change up the words
Why you think the human population has been to grow so much in the last 500 years. what are some of the things that have allowed this to happen
Answers
more housing, better healthcare,
Which characteristic of life best describes the process of homeostasis?
Answers
Answer:
Responding to stimuli / the environment
Explanation:
Answer:
A
Explanation:
True or false please be experienced and know what you are doing. If you are not good at life science please skip this question.
Answers
well, i think the first one is false because plants dont produce sexually
the second one is false
third- please fact check me ut i think its true
forth is true
true
true
true
true
true
please fact check me i grow plants but im not a scientist lol
Which of the systems in Anatomy and Physiology utilizes a positive
feedback loop to control some part of body homeostasis?
- muscular system
- skeletal system
- none of these systems uses positive feedback
Answers
Answer:
none of these systems uses positive feedback
Explanation:
In a positive feedback loop, feedback serves to intensify a response until an endpoint is reached. Examples of processes controlled by positive feedback in the human body include blood clotting and childbirth
Why are worldwide CO2 emissions still rising?
Answers
Answer:
We are still using things that emit Co2. Fossil fuels, natural gas, etc.
Explanation:
how many branches of biology
Answers
Answer:
Explanation:
There are three major branches of biology – botany, zoology and microbiology. Botany is the branch of biology which deals with the study of different aspects of plants.
Which process of alimentary canal that remove undigested food from body? *
3 points
A. Egestion
B. Ingestion
C. Assimilation
Answers
Answer:
A. Egestion
Explanation:
Egestion is the removal of undigested food from body.
Worth 30 points, and I will recommend you! PLS!
If the primary consumer level contained 1,500 kcal (joules) of energy, how much energy would be in the tertiary consumer level?
Answers
Answer:
15
Explanation:
Divide by 10%
1500
to
150
to
15
Which of these body systems has cells that attach to each other to form a leak-proof barrier?
Select one:
Endocrine system.
Respiratory system.
Reproductive system.
Urinary system.
Answers
2
Which statements about humus are true? Choose more than one
answer
It forms from dead plants
It collects in bedrock
It fertilizes soil
It contains carbon
It is only found in topsoil
It erodes the rocks in soil
Answers
It forms from dead plants
It fertilizes soil
It contains carbon
It is only found in topsoil (not sure abt this tho)
Humus forms from dead plants, fertilizes soil, contains carbon, and is only found in topsoil. The correct options are A, C, D, and E.
What is humus?When plant and animal debris decomposes in the soil, humus, a black, organic substance, is created.
Plants scatter leaves, twigs, and other debris to the ground, which accumulates. Leaf litter is the name of this substance. Animal carcasses contribute to the litter after they pass away.
Humus is a form of soil produced by decomposing organisms and plants.
The name was developed by a French soil expert named Muller and is based on the Latin word "soil". Humus is challenging to define and is still not completely understood.
Only found in topsoil, humus is a material that develops from dead plants, fertilizes the soil, and contains carbon.
Thus, the correct options are A, C, D, and E.
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Based on fertility and mortality rates, a developed country will be found in which demographic transition stage?
A
Transitional
B
Industrial
C
Pre-Industrial
D
Post-Industrial
Answers
Answer:
can I get a hoyaah because Apple is good for you and others around you
Answer:
industrial i think im not sure might wanna check first
Explanation:
mrk me brainliest plz
PLZ, I NEED HELP NOW!
Describe the structure of DNA.
Answers
Answer:
Explanation:
The DNA structure can be thought of like a twisted ladder. This structure is described as a double-helix, as illustrated in the figure above. ... The sugar and phosphate groups link the nucleotides together to form each strand of DNA. Adenine (A), Thymine (T), Guanine (G) and Cytosine (C) are four types of nitrogen bases.
How do stories differ from scientific explanation?
Answers
14. Which of the following is not a way in which humans improve biodiversity?
O Introduction of invasive species
O Removal of pollutants
O Reducing fertilizer loads
Restoration of local communities
O Building artificial reefs
Answers
The introduction of invasive species is not a way to improve biodiversity.
• An organism, which causes economic or ecological harm in a new environment where it is not native is known as an invasive species.
• It can harm the natural resources in an ecosystem and at the same time can hamper human use of these resources.
• An invasive species can be a kind of plant, amphibian, insect, fungus, fish, bacteria, etc. and is not native to an ecosystem and results in harm.
• They possess the tendency to cause extinctions of native animals and plants, decline biodiversity, by competing with local species for limited resources, and changing habitats.
Thus, introducing invasive species is not a way by which humans can improve biodiversity.
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What terms correctly define nucleosides?
Nucleosides are polymers that have just a__1__base and a__2___
1.
Nitrogen
Phosphate
Hydrogen
2.
Sugar
Phosphate
Oxygen
Answers
Answer:
: a compound (such as guanosine or adenosine) that consists of a purine or pyrimidine base combined with deoxyribose or ribose and is found especially in DNA or RNA
Answer:
What terms correctly define nucleosides?
Nucleosides are polymers that have just a nitrogen base and a sugar .
got 5 out of 5 answers right with this answer
Consider the path that blood takes through the heart and put the following locations in the correct order. The starting point is blood returning to the heart from
systemic (body) circulation.
1. out to the lungs
2. right atrium
3. left ventricle
4. back from the lungs
5. left atrium
6. right ventricle
7. aorta out to systemic (body) circulation
O A6, 2, 1,4,3,5,7
B.2.5, 1,4,6,3,7
C.2.6,1.4,5, 3, 7
O 0.5,3, 1, 4, 2, 6,7
Answers
Answer:
C
Explanation:
10. What is the difference between
COMPONENTS and GOALS?
Answers
Answer:
The difference between the given two topics is provided below throughout the explanation section.
Explanation:
Components:
A system that would be operationally separate is termed as a component. Everything just accomplishes certain functions and can demand a certain supply as well as create the outcome.Goals:
The major resolutions or judgments that we decide as well as resolve to fulfill, break down many negative habits, acquire better behavior or accomplish further throughout various fields.Bacteria are decomposers that live in soil and water. They feed on dead plants and animals and break them down into simpler elements.
How does the work of decomposers help the ecosystem?
Answers
Answer:
Decomposers play a critical role in the flow of energy through an ecosystem. They break apart dead organisms into simpler inorganic materials, making nutrients available to primary producers.
Explanation:
Which of the following is not a characteristic of the T-Cell line?
A. Regulatory (or suppressor) T-cell inhibit the immune response
B. Cells are matured in the thymus gland
C. The cells originate in bone marrow from stem cells
D. T-Helper cells stimulate both the humoral and cell-mediated response
Answers
Answer:
D. T-helper stimulate only humoral response. Cell mediated is by B cells.
Astrology is pseudoscience. What can you conclude about the claims made by astrology?
Answers
Answer: claims are not valid
Explanation: Astrology suggests position of stars and planets in time of birth of a human being affects one´s life. That has not any kind of scientific evidence
Answer:
They are based on unscientific methods.
Explanation:
Took the quiz.
which of the following is most likely to occur when a barrier develops between two populations of the same species?
1. gene flow between the groups will increase due to more diversity between them
2. the species will become more distinct from each other
3. both groups will go extinct because there are not enough individuals to support them
4. individuals will develop adaptations that allow them to rejoin the other population
Answers
Answer:
The answer is 2
Explanation:
If the populations are separated from each other, they will start to be more diverse.
Carbon in the atmosphere would increase/decrease/stay the same because? Carbon in the geosphere would increase/decrease/stay the same because? Carbon in the hydrosphere would increase/decrease/stay the same because?
Answers
Answer:
I am working on the same thing for school
How is the Grants' work similar to Darwins?
Answers
Answer:
The Grants study the evolution of Darwin's finches on the Galapagos Islands. The birds have been named for Darwin, in part, because he later theorized that the 13 distinct species were all descendants of a common ancestor. ... (The only other finch on the island is the cactus finch.)
Explanation:
A scientist takes some of the genes from one organism and places them into another organism in order to express a desired trait. What is this process called?
A.
genetic engineering
B.
gene pooling
C.
genetic flow
D.
gene mapping
Answers
A scientist helps a colleague do a better experiment by:
O A. laughing when a common and avoidable mistake is repeated.
B. offering advice about how best to perform a standard procedure.
C. explaining why a hypothesis does not need to be tested in an
experiment.
D. refusing to allow anyone else to use an expensive instrument.
Answers
Answer:
B. Offering advice about how best to perform a standard procedure.
Explanation:
Helping others can be in different ways, be it helping out or by giving encouraging words or advice. But in all aspects of help, there is always a positive outcome if help is given in the right way and at the right time. And it is also how one person lifts another.
A scientist can help a colleague out by offering advice and telling the person how to best perform a standard procedure. This will help the colleague do better in the experiment and also help ensure that the right things are done and the efforts are successful. The other options are all negative in their 'approach' which will only hinder the colleague in his/her works.
Thus, the correct answer is option B.
Answer:Offering advice about how best to perform a standard procedure.
A student conducts an experiment on the effects of temperature on seed growth. In a notebook, she draws a picture of the seeds on day 10 and writes that the seeds left in the warmest location have had the largest growth.
What part of scientific investigation best defines these actions?
observations
logical reasoning
hypothesis
evaluating
Answers
Answer:
yellow Read the paragraph.
Jess and her family are moving to a new city. Jess has never lived anywhere else in her life and wonders what the change will be like. She will miss her friends and the familiar sights. However, Jess has always liked trying new things. Her parents said there is a park right next to their new home and a yard big enough for a dog. Jess is interested in her family’s new adventure.
Which phrase best replaces interested in to show how Jess is feeling in this situation?
excited about
uncomfortable with
nervous for
surprised by
Explanation:
yellow wcThe best part of scientific investigation that best defines the action where a student conducts an experiment on the effects of temperature on seed growth and draws a picture of the seeds on day 10 and writes that the seeds left in the warmest location have had the largest growth is observation. The correct option is A.
What is scientific investigation?A scientific investigation is an effort to find explanations for observed phenomena. In general, the scientific investigation follows a step-by-step procedure that identifies a problem to be resolved, collects relevant information, formulates a hypothesis, tests the hypothesis by experimentation, analyzes the information collected, and makes conclusions.
The primary goal of scientific research is to extend the knowledge base of a field of study. The best part of scientific investigation that best defines the action where a student conducts an experiment on the effects of temperature on seed growth and draws a picture of the seeds on day 10 and writes that the seeds left in the warmest location have had the largest growth is observation.
Observation is a collection of data by examining something or someone. It involves looking for particular information or signs of activity, recording the data obtained in a systematic manner, and utilizing the data to draw conclusions or create predictions.
Therefore, the correct option is A.
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A number of major evolutionary innovations arose in the fish lineage. Check all of the evolutionary innovations associated with the fishes.
a) Teeth arose from the rough scales of ancestral sharks.
b) Skeletal developments leading to the amphibian movement onto land probably evolved from lobe-finned fishes.
c) Fish fins are ancestral (homologous) structures to the flippers (forelimbs) of turtles.
d) The anterior gill arch formed the basis for the evolution of the vertebrate jaw.
e) The swim bladder ultimately led to the evolution of the amphibian urinary bladder.
Answers
Answer:
a) Teeth arose from the rough scales of ancestral sharks.
b) Skeletal developments leading to the amphibian movement onto land probably evolved from lobe-finned fishes.
d) The anterior gill arch formed the basis for the evolution of the vertebrate jaw.
Explanation:
The animals we know today have physical characteristics that are evolutionary adaptations of characteristics of their ancestors, which have undergone a series of evolutions and modifications over the years giving rise to new species that have resulted in the species we know today. This process of evolutions and adaptations also happened with the ancestral species of fish, which allowed that today, they had characteristics such as teeth and jaws. Many of these evolutions occurred even in different species, such as the evolution that allowed the amphibians to have a skeleton, which evolved from the spine fins of fish.
Codominance involves
A. multiple alleles
B. multiple genes
C. multiple chromosomes
D. multiple traits
Answers
Answer:
Codominance involves A.) multiple alleles
Answer:
A.) multiple alleles
Explanation:
.