Which is not true of the element nitrogen?
A. There is more nitrogen gas in the air than oxygen.
B. Nitrogen atoms form diatomic molecules.
C. Nitrogen in the air is highly reactive.
D. Nitrogen is used as a fertilizer for soil.
How can human use of natural resources pollute the environment? :(
Answer:
If a human does an non ecofriendly thing such as litering, it can damage earths atmosphere
Explanation:
i duno
Answer:
Humans impact the environment in several ways. Common effects include decreased water quality, increased pollution and greenhouse gas emissions, depletion of natural resources and contribution to global climate change.
Explanation:
hope it helps:)
The image shows a projection map.
Which type of map is this?
flat model, Mercator projection
flat model, conic projection
highly distorted model, Mercator projection
highly distorted model, conic projection
Answer:
A. flat model, Mercator projection
Explanation:
I just took the test :]
A spring-fed stream forms a pond that contains watercress plants, minnows, and crayfish. The pond receives 5 hours of direct sunlight every day. Which of the following is an abiotic factor in this ecosystem?
the pond water
the watercress plants
the minnows
the crayfish
Answer:
The pond water
Which of the following is a problem caused by acid rain?
respiratory problems in humans
is a factor in global warming
makes lakes and streams unsuitable aquatic life
Answer:
Air pollution like sulfur dioxide and nitrogen oxides can cause respiratory diseases, or can make these diseases worse. Respiratory diseases like asthma or chronic bronchitis make it hard for people to breathe.
Answer:
1st one
Explanation:
mark brainliest please
I REALLY NEED HELP ITS DUE AT 11:59 PM
Answer:
I attached a photo of balanced equations but thats as much as I can help.
Explanation:
How many moles of Hg are in a thermometer that contains 0.055 mL of Hg?
Answer:
745.8
Explanation:
Answer:
745.8
Explanation:
I hope this helps, and correct I mostly guaranteed is correct.
This is a star map of the constellation Orion. It represents part of the celestial sphere on a specific day, time, and location.
star chart depicting constellations. On the left side of the star map is the declination, ranging from -26⁰ at the bottom of the chart to 34⁰ at the top of the chart in increments of 2⁰. The right ascension begins at 7h and decreases hourly as you move to the right. The larger stars that comprise the constellation Orion are; Rigel with a declination between -10⁰ and 0⁰ and right ascension between 6h and 5h. Alnitak has a declination between -10⁰ and 0⁰ and a right ascension between 6h and 5h. Bellatrix has a declination between +10⁰ and 0⁰ and a right ascension between 6h and 5h. Betelgeuse has a declination between +10⁰ and 0⁰ and a right ascension between 6h and 5h
Public Domain
What are the approximate coordinates of the star Rigel?
5 hours 10 minutes right ascension and -8⁰ declination
5 hours 40 minutes right ascension and -2⁰ declination
5 hours 40 minutes right ascension and 10⁰ declination
6 hours 50 minutes right ascension and 6⁰ declination
5 hours 10 minutes right ascension and -8⁰ declination.
PLEEASEE HELP ITS PAST DUE AND IM GIVING BRAINLIEST
Which process is an example of a physical change?
a. wood burning in a camp fire
b. iron rusting on a bicycle chain
c. ice melting after a snow storm
d. milk souring because it is old
Answer:
c or d
Explanation:
i dont know which one but it's one of those
If an atom does not bond to another, The number of electrons does not change. True or false?
Please help!
explain why the sun appers to be the brightest star in the sky. relate your explanation with an example such as street lights. this is science
Answer:
The sun is a star but It is the brightest in the sky because it is the closest star to earth.
I don't know how to compare it to street lights though...
Explanation:
I would appreciate your help! Due today! ( I don't know if this is even chemistry)
Answer:
6+69
Explanation:
Which metals are so reactive that they are never found as uncombined elements in nature?
A. alkaline earth metals
B. alkali metals
C. rare earth metals
D. transition metals
Why are lysosomes important?
When a cell is beyond repair, lysosomes help it to self-destruct in a process called apoptosis.
Answer: A lysosome is a membrane-bound cell organelle that contains digestive enzymes soooo. They break down excess or worn out cell parts, they may be used to destroy invading viruses and bacteria. If the cell is damaged beyond repair, lysosomes can help it to self-destruct in a process called programmed cell death, or apoptosis.
Explanation: So that's why it is important
How many outer electrons does a noble gas like Neon or Xenon have? Does this mean it is highly reactive, somewhat reactive, or non-reactive? *
8, non-reactive
1, highly reactive
4, somewhat reactive
4, highly reactive
1, somewhat reactive
1, non-reactive
8, highly reactive
8, somewhat reactive
4, non-reactive
Magnesium metal burns with a bright white flame. What conclusions can you draw about the electron transitions that can take place for a magnesium atom ?
The inference that can be made regarding the electronic transition that a magnesium atom is capable of experiencing is that the photons generated are not of a single wavelength.
What is metal?Metal is any of a group of substances with strong thermal and electrical conductivity, malleability, ductility, plus high light reflection.
The inference that can be made regarding the electronic transition that a magnesium atom is capable of experiencing is that the photons generated are not of a single wavelength, but rather are transitioned from several dissimilar levels to higher tiers, with several different wavelengths having joined to create white.
Therefore, the inference that can be made regarding the electronic transition that a magnesium atom is capable of experiencing is that the photons generated are not of a single wavelength.
To learn more about metal, here:
https://brainly.com/question/29766835
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How can I use chemical properties in a sentence?
Answer:
A property used to characterize materials in reactions that change their identity. 1, The chemical properties of coal are still incompletely understood. 2, Nevertheless, taken on balance, if you possess unpleasant chemical properties, it pays to advertise
Explanation:
In an experiment, mixing baking soda and vinegar produced a combination of salty water and carbon dioxide shown in the following graph. What is the combined mass of the baking soda and vinegar before mixing?
45 grams
55 grams
35 grams
450 grams
Answer:
When the two substances are mixed together, hydrogen ions in the vinegar react with the sodium and bicarbonate ions in the baking soda. This initial reaction results in two new chemicals: carbonic acid and sodium acetate. A decomposition reaction is the second reaction that occurs.
Both before and after the reaction, the mass is unchanged. Mixing vinegar with baking soda causes a chemical reaction. Carbon dioxide gas is one of the new chemicals that are created.
What is mass ?Mass is a physical body's total amount of matter. Inertia, or the body's resistance to acceleration when a net force is applied, is also measured by this term. The intensity of an object's gravitational pull to other bodies is also influenced by its mass. The kilogram is the primary mass unit in the SI.
A majority of an atom's mass is contained in its nucleus. For discussions of how atoms interact with one another and therefore for chemistry, biology, and electronics, the surrounding electrons are of course essential.
The hydrogen ions in the vinegar and sodium and bicarbonate ions in the baking soda interact when the two substances are combined. Carbonic acid and sodium acetate are the two new compounds produced by this first reaction.
Thus, According to the Law of Conservation of Mass, if the carbon dioxide gas is confined, the mass of the components will remain the same.
To learn more about the mass, follow the link;
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Which elements do not normally form compounds?
A. nonmetals
B. alkali metals
C. metalloids
D. noble gases
Answer:
D. noble gases
Explanation:
l hope it helps
Please help!
Geologists determine the hardness of a mineral using the Mohs scale of hardness. Why is it important for geologists to be able to do these tests in the field?
Answer:
To help determine what type of rock it is
Explanation:
Geologists can use information such as color, hardness, grain size, texture and other aspects of the rock to figure out the classification of a rock. for example, a light blue rock with no visible grain that is translucent and has a hardness of 9 is most likely going to be a saphire. hope this helps!!!!
PLEASE HELP MEEEE THIS IS ABOUT BODY SYSTEMS
DOES ANYONE ELS FIN SNUFFLEUPAGUS CREEPY CAUSE I DO.....
Answer:
BROO.... YESSS
Explanation:
Answer:
Yes
Explanation:
They just creep me out
Which of these can be combined to make a mixture?
a. solid and a liquid
b. two solids
c. two liquids
Answer:
c
Explanation:
you cant mix a rock and a rock together and expect to get a mixture
and you cant mix a rock and water and expect them to mix
so its on logical that it is two liquids
So I need to turn in a one-pager about repetition and replication, and for an extra credit it says "Write two rhymes using information from your notes about repetition and replication. Use the proper grammatical format." I have no idea what to put down but I still wanted to get extra credit to help my grade a bit. (This is supposed to be Science- 7th grade, but I couldn't find the "Subject". Sorry)
Here's a rhyme about repetition I just made:
For accurate data, repeat and repeat,
so any inaccuracies will be beat!
Here's a rhyme about replication I just made:
Replication is important, so check your experiment.
When you replicate, with your results you'll feel confident!
I hope this helps! Feel free to give me Brainliest if you feel this helped. Have a good day and good luck on your assignment. :)
Scince 20 points HURRY
Define, describe and give examples of Internal, External, and Behavioral adaptions.
Answer:
All organisms have adaptations that help them survive and thrive. Some adaptations are structural. Structural adaptations are physical features of an organism like the bill on a bird or the fur on a bear. Other adaptations are behavioral. Behavioral adaptations are the things organisms do to survive. For example, bird calls and migration are behavioral adaptations.
Adaptations are the result of evolution. Evolution is a change in a species over long periods of time.
Adaptations usually occur because a gene mutates or changes by accident! Some mutations can help an animal or plant survive better than others in the species without the mutation.
birdFor example, imagine a bird species. One day a bird is born with a beak that is longer than the beak of other birds in the species. The longer beak helps the bird catch more food. Because the bird can catch more food, it is healthier than the other birds, lives longer and breeds more. The bird passes the gene for a longer beak on to its offspring. They also live longer and have more offspring and the gene continues to be inherited generation after generation.
Eventually the longer beak can be found in all of the species. This doesn't happen overnight. It takes thousands of years for a mutation to be found in an entire species.
Over time, animals that are better adapted to their environment survive and breed. Animals that are not well adapted to an environment may not survive.
The characteristics that help a species survive in an environment are passed on to future generations. Those characteristics that don't help the species survive slowly disappear.
Explanation:
Zavia climbed a mango tree to get the ripest mangoes. He got stung by a bee. What do you suggest for Zavia to put on the bee sting for neutralization to occur?
1 Ice
2 Baking soda
3 Benadryl
4 Vinegar
Answer:
Baking soda
Explanation:
A student wants to increase the rate at which his powdered drink dissolves in water.
Which of these is the best method to use to increase the rate the powder dissolves?
A. increase the temperature of the water
B. reduce the stirring time
C. reduce the amount of water
D. increase the amount of powder
Answer:
A Increase the temperature of water
Explanation:
You can look on sciencing.com for expanation
Danny is trying to figure out how fast sugar crystals can dissolve in water. He has already tested crystals of table sugar by just pouring packets of sugar into a bowl of room-temperature water.
Which should Danny try next if he wants to make the sugar dissolve slower?
A.
stir the water
B.
use larger crystals
C.
heat the water
D.
all of these
Answer:
B
Explanation:
In which ocean zone does a reef most likely thrive?
Which group of elements has the highest boiling point? * IIIa (13) IIa (2) Ia (1) IVa (14) Transition metals
Answer:
the elements that have the highest boiling is transition metals