Which of these elements has the greatest average atomic mass?4
Question 4 options:
C
Al
N
B
How many times of o are there?
Fill in the blank:
Tree roots speed up ____ by creating and widening cracks in rocks! Tree roots slow down ____ by holding sediments in place so they're not transported away as quickly.
Answers to pick:
1) Weathering, erosion
2) Erosion, weathering
Answer:
Weathering, Erosion
Explanation:
Plants and animals can be agents of mechanical weathering. The seed of a tree may sprout in soil that has collected in a cracked rock. As the roots grow, they widen the cracks, eventually breaking the rock into pieces. Over time, trees can break apart even large rocks.
Tree root systems have a handful of large roots that branch out into a network of smaller roots that often extend out far beyond their branches do. These root systems prevent erosion by holding the soil in place and improving drainage which helps water get absorbed into the soil instead of just running over the top.
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An element that is an invisible gas is
a gold
b copper
c iron
d oxygen
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The questions to the picture is below:
A chemist mixer two substances together: a colorless liquid with a strong strong smell and a white solid with no smell. The substances’ repeating groups of atoms are shown on the left. After they were mixed, the chemist analyzed the results and found two substances, One ending substance had the resorting group of atoms shown above on the right.
Is the ending substance the same as the colorless liquid? What happened to the atoms of the starting substances when the ending substances formed? Be sure to explain your answers to both of these questions.
A person swims the length of the pool, from Point X to Point Y. They complete this lap in 10 seconds. What is the speed of the swimmer?
A
15 m/s
B
5 m/s
C
50 m/s
D
500 m/s
Answer:
b
Explanation:
Amy uses a piece of lab equipment to change electrical energy into thermal energy. What did she most likey do?
A. Warmed liquid in a test tube over a candle flame
B. Used a hot plate to boil a beaker of water
C. Mixed two chemicals to produce heat
D. Used a thermometer to measure the temperature of ice water
Answer:
The right answer is b ( using a hot plate to boil a beaker of water
Explanation:
To power the hot plate you have to have electricals that form heat on the metal plate of the top which then comes in contact with the glass beaker which finally boils the water causing heat to form called water vapor from the heat of the hot plate to the water.
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examples of changing direction?
Answer:
All changes in motion (speed or direction) need an outside cause. Other examples would be a soccer player kicking a moving soccer ball so it changes direction, or a hockey player hitting a sliding puck with his stick so as to redirect it.
Explanation:
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Answer:
C
Explanation:
Isn't gelatin just edible slime
Answer:
Huh?
Explanation:
am confused as u lol
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Answer:
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Which of the following characteristics is NOT associated with El Niño?
El Niño is the characteristic of the ocean associated with warm temperatures. The correct option, which is not the characteristic of El Niño is Coolers rising to the surface of the ocean.
What is El Niño?El Niño represents unusually warm ocean temperatures in the Equatorial Pacific, which is just opposite to La Niña, i.e., unusually cold ocean temperatures.
The correct option is Coolers rising to the surface of the ocean.
Learn more about El Niño.
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How many atoms of S are there?
What happens to the ocean water after the condensation part of the water cycle?
1 The ocean water collects in lakes and streams.
2 The ocean water turns into water vapor.
3 The ocean water falls down as precipitation.
4 The ocean water runs off Earth's surface.
Answer: A
Explanation:
Give an example that shows energy transfer and another one that shows energy transformation.
Answer:
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Explanation:
An element that is a silver-colored liquid is?
a hydrogen
b mercury
c silver
d carbon
Answer:
mercury
Explanation:
silver in color, and you can find in on the periodic table
HELP! I NEED HELP ON THIS!!
Answer:
producers: maple tree, tomato plant
consumer: deer, hawk
decomposer: bacteria, fungi
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In order to improve their recovery after an intense workout many high-level athletes do "cool downs" to slow their movements, eat a snack, and breathe deeply. What choice below accurately explains how these steps aid cellular respiration?
Group of answer choices
By breathing in deeply and eating a snack, the athlete is able to take in more oxygen and sugar, which allows their cells to produce ATP energy through cellular respiration
Cooling down in this way allows them to take in more carbon dioxide and water which allows their cells to produce energy through cellular respiration.
Breathing deeply and eating a snack releases more carbon dioxide and sugar which are needed to perform cellular respiration.
Eating a snack takes in ATP energy which is then converted to sugar which is needed by the body to produce oxygen to begin cellular respiration.
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Answer:
This question is so confusing, I'm sorry
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Write 2-5 sentences using the phrases electric generator and electric motor.
Answer:
Explanation:
the difference between electric generators and electric motors are easy to find. An electric motor converts electricity into mechanical energy. A electric generator does the opposite by converting mechanical energy into electricity.
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Answer:
C.
Explanation:
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Answer:
there are blanks in the picture. what kind of winds are being asked about?
Some animals migrate, or seasonally move to a different place. In some bird populations, such as Canada geese, some birds migrate and some stay in the same area year-round. Migration can enhance the survival of individuals because it —
exerts a lot of energy.
Identify which type of chemical reaction is shown:
2NaF + Br2 → 2NaBr + F2
Answer choices:
Single Replacement/Displacement
Synthesis/Combination
Double Replacement/Displacement
Decomposition
Combustion
How does the transfer of energy from the Sun to Earth compare with the way energy is distributed in ocean water?
Select one:
a. Energy from the Sun is transferred through convection, while energy in ocean water is distributed by conduction.
b. Energy from the Sun is transferred through radiation, while energy in ocean water is distributed by convection.
c. Energy from the Sun is transferred through conduction, while energy in ocean water is distributed by radiation.
d. Energy from the Sun is transferred through radiation, while energy in ocean water is distributed by conduction.
d. Energy from the Sun is transferred through radiation, while energy in ocean water is distributed by conduction.
The correct statement is that Energy from the Sun is transferred through radiation, while energy in ocean water is distributed by convection.
What is transfer of energy?When one form of energy is transfered into another form without any loss of energy, then it is known as transfer of energy.
As energy from the sun come to the earth through the radiation process, but in the oceans energy is distributed by the convection process in which movement of heated fluid takes place.
Conduction is a process in which heat is tranfered due to collision of particles.
Hence, Energy from the Sun is transferred through radiation, while energy in ocean water is distributed by convection.
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How many atoms of Br are there?How many atoms of Br are there?
Answer:
8
Explanation:
There are 8 atoms of Br because there are two molecules of 4 atoms of Br. 4 x 2 = 8.
Answer: 1 mol Br contains 6.022×1023Br atoms;its mass is 79.90 g.
Explanation:
: I mole or bromine refers to 6×10^23 molecules of bromine. But 1 molecule of bromine has 2 atoms. Hence the atom count will be exactly twice.
Which of the following are made mostly or entirely of proteins? (Select all that apply.)
fats
body tissues
carbohydrates
hormones
I think the answer is body tissue
Answer:
Body tissues/hormones
Explanation:
Excluding water and fat, the human body is made up almost entirely of protein. Protein is the main component of muscles, bones, organs, skin, and nails. Excluding water, muscles are composed of about 80% protein, making this nutrient especially important for athletes.
1) Protein hormones (or polypeptide hormones) are made of chains of amino acids. An example is ADH (antidiuretic hormone) which decreases blood pressure. 2) Steroid hormones are derived from lipids.