Answer:
A burning piece of wood is a chemical change, because you alter it, and it turns to ashes, and it is irreversible, where as you can make water cold again
Answer:
youre creating a new substance in a chemical reaction
Explanation:
by boiling water, you arent making anything new. you're just changing the form of the water.
by burning wood, you're inducing a chemical reaction because some new substance is being made with the reactants
What is the structure for each macromolecule (what does each one look like?)
Answer:
Within cells, small organic molecules are joined together to form larger molecules. These large macromolecules may consist of thousands of covalently bonded atoms and weigh more than 100,000 daltons. The four major classes of macromolecules are carbohydrates, lipids, proteins, and nucleic acids.
What does a food chain show the flow of between living things?
water
carbondioxide
oxygen
energy
Answer:
energy
Explanation:
cuz i did science
how does air pressure affect weather
Answer:
Hewo, Kiluawa (sorry if i spelled it wrong)
Explanation:
High Pressure
Basically, high pressure occurs in an area if the atmosphere over that particular area becomes heavier. As a result, the heavy air above will come down to the Earth’s surface. And the air present in that area will move away to create space for the heavy air.
Commonly, the warmer months experience high pressure. You’re more likely to enjoy a comparatively dry and stable weather pattern in those months. Besides, you’ll find the skies in high pressure areas very clear. You’ll also feel a gentle breeze there that will cool down the surrounding areas.
Low Pressure
On the other hand, the air above a low pressure area is comparatively much lighter than the air below. As the heavy air on the Earth’s surface cannot go further below, it pushes away the lighter air above. As a result, a vacuum is created on the surface level and the air in the surrounding areas rushes towards it to fill up the void space.
Meanwhile, the rising air starts to cool down and form clouds in the sky. These clouds then come down to the Earth in the form of rain. Sometimes, snow is also formed depending on the temperature of the surrounding areas.
In general, colder months of the year experiences more low pressure situations. By now, you probably can guess why. The cold air on the surface level is heavier than the air above. And these low pressure areas are the reasons behind unstable weather conditions like snow, ice, rain, storm, etc.
Hope This Helps!
How do we detect the cosmic microwave background radiation?
A. by looking for a glow in the night sky
B. by looking for radiation at the blue end of the spectrum
C. through magnifying glasses
D.through radio telescopes
Answer:
D. Through radio telescopes
Explanation:
The way we are able to detect them is by radio telescopes
If you are on the top a mountain and drop an apple, it
will fall to the ground, even though the apple is
gravitationally attracted to you. Why?
a)Earth is larger and has a much stronger
gravitational pull
b) Apples always fall down
C) Centrifugal forces pull the apple to the Earth
and that is stronger than your gravitational pull
d) None of these
2. Cell division by mitosis produces:
A. Two cells identical to each other but not to the parent cell
B. Two cells identical to each other and to the parent cell
C. Two cells with half the amount of DNA as the parent cell
D. Two cells with twice the amount of DNA as the parent cell
Please hurry !!
Answer:
D
Explanation:
I think that is tha Fact
1. How do you think rapid changes in the chracteristics of habitats affect the niches of
animals occupying that habitat?
Answer:
The rapid changes would make an organism change their land, environment around them, and the food web
When the habitat of the animals living in it changes, both the animals and the habitat change. It changes the biotic and abiotic factors of the niche and ecosystem. Habitat is part of a niche.
What is the impact of the changing habitat?
Niche is a broad space in which the particular animal roams, searches for food, and reproduces, but habitat is a part of the niche where the animal spends most of its life. Human interventions, such as cutting down forests for industry, roads, and so on, have an impact on wildlife. Due to this, the temperature of the earth keeps on increasing, resulting in climate change, global warming, the melting of ice, a rise in water levels, etc.
If these changes happen, then animals will have difficulty living in their habitat. The environment will not be favorable for living, and both abiotic and biotic factors will be disturbed, such as the fertility of the soil, which is affected by fewer trees. Other animals affect by this change too.
Hence, in this way, the change in habitat changes the niche.
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In 2019, what was the total income for all agriculture commodities?
Answer: Cash receipts for all commodities are forecast to decrease $12.3 billion (3.3 percent) to $358.3 billion (in nominal terms) in 2020. Total animal/ ...
Explanation:
How are DNA tests useful to solve a more mystery? Explain in your own words.
Explanation:
forensic scientists can compare DNA found at the crime scene from blood or hair to DNA samples taken from suspects if there is no match they may be able to rule out that suspect. if there is a match police would likely want to take a closer look.
the dispersal of ink in a beaker of water is an example of
a. endocytosis
b. diffusion
c. active transport
d. osmosis
Answer:
A
Explanation:
Diffusion is the answer:)))
Assignment: 03.01 Seasons of Change
Answer:
What's the question? There's no specific question there
In what ways are the ingredients in a cake like the gases in Earth’s atmosphere?
Answer:
because there are different types of gases and layers of the atmosphere on earth.
Explanation:
. An astronaut weighs 120 Newton’s on the moon, where the strength of gravity is 1.6 N/Kg. What is her
mass in Kg?
Answer:
75 kg
Explanation:
answer is above
WILL GIVE BRAINLIEST
The region of the earth where ecosystems interact
Do molecules crossing a membrane using active transport go WITH or AGAINST the concentration gradient??
Which of the following characteristics of Figure 1 best shows that the fragment is RNA and not DNA?
A
The 5' to 3' orientation of the nucleotide chain
B
The identity of each nitrogenous base
С
The charges on the phosphate groups
D
The type of bond linking the nucleotides together
Answer: I’m pretty sure it’s B
Explanation:
there is a uracil nitrogenous base in it and only rna has uracil whereas dna has thymine
HELP ON NUMBER 5 IMPORTANT
Answer:
FLVS?
Explanation:
number 1 stop going on brainly and asking people for answers and 2 the answer is a 25% chance that the offspring with be a chesnut colored.
Can anyone help please
Answer:
Although secreted by the pancreas, glucagon directly impacts the liver as it works to control blood sugar levels. Specifically, glucagon prevents blood glucose levels from dropping to a dangerous point by stimulating the conversion of stored glycogen to glucose in the liver.
Explanation:
:) (i'm not supposed to tell you the answer but i can help you)
A large bar of solid gold is melted into liquid. The liquid is then poured into
molds to make a number of gold coins. Was this a chemical or physical
change? Explain.
Chemical, because the gold turned into something new and is no longer gold.
Physical, because the gold changed size and shape, but is still gold.
Answer:
It is physical, the gold is still gold and there has not been any chemical change. Melting, boiling, freezing, etc. are physical changes.
Need help quiz is here and this is the only answer I don’t know
Answer:
activation energy is the answer
Two heterozygous tail pea plants with the same genotype, Tt, are crossed. What is the probability that the offspring of this cross will have a heterozygous genotype?
A. 50%
B. 25%
C. 100%
D. 75%
2. How long would it take for a car to travel a distance of 275 km if it is traveling at a velocity of 55
km/hr?
Answer:
5 hours
Explanation:
275 divided by 55 = 5
what is the process of transferring sea water to fresh water?
Answer:
Desalination
Explanation:
desalination is a technique where the excess salt are removed from salt water or brackish water.
9. The phases of the moon are the regular changes in how the moon looks from Earth. In which phase is the moon completely visible from Earth?
Group of answer choices
A. Full moon
B. New moon
C. Waxing gibbous
D. Waning crescent
Answer:
A, full moon
hope this helps ;)
In the full moon phase, the moon is completely visible from the Earth. Therefore, the correct option is A.
What are the phases of the moon?The phases of the moon results from the changing position of the moon relative to the Sun and the Earth.
There are 8 phases of the moon:
1.) New moon-The moon is between the sun and the earth, with its illuminated side facing away from us.
2.) Waxing crescent-The moon is partially illuminated increasing in size, appearing as a crescent shape.
3.) First quarter-The moon is 90 degree east of the sun and appears as a half moon shape.
4.) Waxing Gibbous-The moon appears as gibbous shape.
5.) Full moon-The moon is on the opposite side of the earth from the sun, and its entire illuminated side is visible.
6.) Waning gibbous-The moon is partially illuminated and decreasing, appearing as a gibbous shape.
7.) Third quarter-The moon is 90 degree west of the sun and appears as a half moon shape.
8.) Waning crescent-The moon is partially illuminated and decreasing, appearing as a crescent shape.
The cycle of phases repeats approximately every 29.5 days, from new moon to new moon. Therefore, the correct option is A.
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Water is polar. What types of bonds does this allow water to make with other water molecules?
Answer:
Covalent bonds.
Explanation:
Water forms polar, covalent bonds with other molecules because of the uneven electron charge.
What causes cells to become specialized??? ✨
Answer:
Cell differentiation is how generic embryonic cells become specialized cells. This occurs through a process called gene expression. Gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a cell functions.
Explanation:
Hope that helped if it did please give me brainiest Thanks :3 <333333
Why is resource management of forest important for economic
Answer:
timber, plant medicinal resources, genetic materials, and recently a source for generating carbon credits.
Explanation:
please help asap i will mark brainliest
Answer:
I would say the 3rd one because itakes the most sence
Answer:c because the compound has formed through 2 gases that made up a liquid the oxygen has bigger in size and is more abundant in mass while hydrogen is smaller but more abundant in numbers
Explanation:
I’m not sure what the answer is.
Answer:
The answer is A
Explanation:
Which events take place in the light-dependent reactions of photosynthesis?
ERRE
O Light energy is converted sugars; sugars are broken down for energy.
O Light energy is captured by plants, light energy is used to make sugar.
O Light energy is converted to chemical energy; chemical energy is used to make sugar.
O Light energy is captured by plants; light energy is converted to chemical energy.
W
Markthina
Answer:
d
Explanation: