I if a radioactive material has a 10 year half-life, how much of a 100 g sample will be left after 20 years?
A. 50g
B. 6.25g
C. 12.50g
D 25g
Minerals are generally
a)solids
b)liquids
c)gases
d)plasmas
Answer:
A) solids
Explanation:
Most minerals are solids if I am correctamundo(that's a real word, crazy right?)
Have a great day everybody stay safe and be kind. :))
kelp forest could help protect the ocean animals from ocean acidification what evidence supports this claim and explain why the evidence supports the claim
Answer:
Kelp is an ecologically and economically important foundation species in California, where forests line nutrient-rich, rocky bottom coasts. One of the detrimental impacts of increased carbon in the atmosphere is its subsequent absorption by the planet’s oceans, which causes acidification – a chemical imbalance that can negatively impact the overall health of marine ecosystems, including animals people depend on for food.
Kelp has been targeted as a potentially ameliorating species in part because of its speedy growth – up to 5 inches per day – during which it undergoes a large amount of photosynthesis that produces oxygen and removes carbon dioxide from the water. In Monterey Bay, the effects of giant kelp are also influenced by seasonal upwelling, when deep, nutrient-rich, highly acidic water from the Pacific is pulled toward the surface of the bay.
Explanation:
change it up a bit but hop this helps?
What is the main idea of this text?
The world today is filled with advertisements. We see them on TV, in the newspaper, on the Internet, and in our surroundings. The advertising industry affects the way we look at and judge people around us. Catchy taglines and trendy jingles influence our choices on a daily basis. We constantly change our lifestyles depending on the current trends. We feel compelled to buy products that keep popping up on our screens. We struggle to keep up in a race for getting the newest or most popular product.
A.
Advertisements have a huge impact on our daily lives.
B.
Brand names have no assurance of quality.
C.
Advertisements do not impact personal choice.
D.
People are judged by the brands they use
Answer:
A
Explanation:
The entire paragraph is about how advertisements consume us. And that is a pretty big impact. It says nothing about the quality, or the judgement we face that comes with advertisements.
Answer:
The answer is A
Explanation:
I took the test
Why is genetic equilibrium uncommon in actual populations?
Answer: If a population is not evolving, allele frequencies in its gene pool do not change, which means that the population is in genetic equilibrium. ... Evolution, in genetic terms, involves a change in the frequency of alleles in a population over time.
Explanation:
Bill left a hammer out in the rain all day. The next morning it had rust on it. Oxygen and a metal chemically combine to form rust. What is rust an example of? a. A mixture b. An element c. A solution d. a compound
Answer:
d. a compound
Explanation:
Rust is also known as "iron oxide." It is a compound that is very common around the world. This compound is formed because iron readily combines with the element, oxygen. This is the reason why it is not common to find pure iron in the environment. The process of an iron rusting is called "corrosion."
The speed of rusting largely depends on the electrolytes present. Rain is considered a better electrolyte that speeds up the rusting of the iron than pure water. Thus, this is the reason why Bill's hammer had rusts on it the next morning.
Answer:
D
Explanation:
Which of the following is a decomposer? O A. Fern B. Worm O C. Wolf O D. Banana
4) fill in the blanks with the following options:
a) eukaryotic
b) prokaryotic
1)bacteria______; bacteria, blue-green algae, spirochetes
2)archaea______; halophiles, thermophiles
3)protista______; dinoflagelletes, golden-brown and yellow-green algae, diatoms, amoeba
4)plantae______; all plants
5)fungi______; molds, yeasts, mushrooms
6)animalia______; all animals
PLEASE HELP ME ASAP 50 POINTS BRAINLEIST WILL BE CHOSEN PLEASE HELP ASAP!!!!!!!!!!!!!
Which of the following is the best description of the damage caused by a category five hurricane?
A Extreme damage, large amounts of damage to homes
B Catastrophic damage, homes completely leveled
C Moderate damage, large trees snapped or uprooted
D Minimal damage, broken tree branches
Answer:
B. Catastrophic damage, homes completely leveled.
Explanation:
Answer:
B. Catastrophic damage, homes completely leveled.
Explanation:
Using a complete sentence describe a eukaryotic cell
PLEASE ANSWER ASAPPPP
Answer:
A eukaryotic cell has a nucleus.
Explanation:
What conditions make for a violent volcanic eruption?
A. Magma with low viscosity
B. Magma with high silica content
C. Magma with low gas content
D. Magma that can flow easily
Answer:
B
Explanation:
100% B is right
Which of the following correctly states the roles of the xylem and guard cells in the
process of photosynthesis?
Answer:
Plants convert energy from sunlight into sugar in a process called photosynthesis each plant contains a branched system of tubes called xylem which is responsible for water transport from the roots (where it is taken up) to the leaves (where it is used in photosynthesis).
Plants convert energy from sunlight into sugar in a process called photosynthesis each plant contains a branched system of tubes called xylem which is responsible for water transport from the roots (where it is taken up) to the leaves (where it is used in photosynthesis).
What is mesophyll?Mesophyll cells are specialized cells present in the plant leaves and are significant for the process of most of the photosynthesis ( that is formation of food that is carbohydrate using carbon dioxide and water in the presence of sunlight).
These cells have chloroplast ( a green colored, membrane bound specialized organelle) where this mechanism of photosynthesis occurs.Plants convert energy from sunlight into sugar in a process called photosynthesis each plant contains a branched system of tubes called xylem which is responsible for water transport from the roots (where it is taken up) to the leaves (where it is used in photosynthesis).
Therefore, Mesophyll cells are specialized cells present in the plant leaves and are significant for the process of most of the photosynthesis.
Learn more about Mesophyll cells on:
https://brainly.com/question/23177537
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which enzyme would be the most efficient
Mass is measured in kilograms and acceleration is measured in m/sec/sec and force is measured in newtons.
True
False
Answer:
Mass is measured in kilograms and acceleration is measured in m/sec/sec and force is measured in newtons.
True
Can you cry underwater?
Is it possible I need full explanation
Thanks I’ll give brainliest
Answer:
The answer however is yes you can, but you would probably die. The body mechanism for crying under water works just as fine above as below the water. So you can cry tears, they would just be mixed with the rest of the water.
Explanation:
1. The cells in our bodies are surrounded by these types of solutions.
3. When an animal cell is places in this solution, it will burst (get layer)
4. When an animal cell is placed in this solution, it will shrivel or shrink (get smaller).
5. This is a solution with more solute than the cell.
A) isotonic solution
B) hypertonic solution
C) hypotonic solution
Answer:
1. The cells in our bodies are surrounded by these types of solutions. → Isotonic solution.
3. When an animal cell is places in this solution, it will burst (get layer) → Hypotonic solution.
4. When an animal cell is placed in this solution, it will shrivel or shrink (get smaller) → Hypertonic solution.
5. This is a solution with more solute than the cell. Hypertonic solution.
Explanation:
The cells in the body are in a balance of substances —concentration of solutes— between their cytoplasm and the extracellular space. This balance is dynamic in living beings, due to the constant exchange of ions and substances between the intracellular and extracellular space. For this reason, the extracellular medium is isotonic with the cytoplasm.
A cell can lose or gain water depending on the amount of solutes that a medium has in which it is found, with respect to the cytoplasm. This difference in solutes concentrations produces an osmotic gradient that drags water from the least concentrated solution to the most concentrated, through the process of osmosis, which seeks to achieve an equilibrium of concentrations.
When a animal cell is exposed to a hypertonic solution —with a higher concentration of solutes— it loses water and tends to dehydrate and become smaller.An animal cell in a hypotonic solution receives water, so it can expand and even burst.In practice, the concentrations of intracellular and extracellular solutes depend not only on the osmotic gradient, but also on the concentration gradient of substances.
The process of …………………. ensures continuity of life on the earth.
a. Reproduction
b. Respiration
c. Transpiration
d. Photosynthesis
Answer:
Reproduction
Hope it helps:)
Please mark as brainliest
What is it called when Scientists state whether their data confirmed or rejected the hypothesis?
A. Drawing a conclusion.
B. Making a prediction.
C. Collecting data.
D. Stating a problem.
Answer:
The answer is A. - Drawing a Conclusion
Explanation:
Your friend Olivia has a blemish on her shoulder that she can’t easily see herself, so she asks you to check it out for her to help her decide if she should see her doctor. What are at least three things you would look for to help you advise her? (Remember: ABCDE!)
Answer:
A rash, it’s spreading, it itches
Explanation:
Those are my answer hope it helps
Answer:
see if it spreads
Explanation:
to keep checking it
William is developing the model shown below to illustrate the process of photosynthesis. He plans to use the model to explain how photosynthesis transforms both energy and matter.
Earth systems include the biosphere, atmosphere, and geosphere. Use the model to explain how photosynthesis acts to transfer carbon between two Earth systems.
Answer:
Biosphere and atmosphere.
Explanation:
Biosphere refers to the living organisms lives on the earth surface. All plants takes carbon in the form of carbondioxide gas from the atmosphere for the production of glucose in the process of photosynthesis and releases carbondioxide by the living organism in the process of respiration as a waste product. We can conclude from this discussion that photosynthesis acts to transfer carbon between two Earth systems such as biosphere and atmosphere.
What is the parental or P generation? (i give out branist!)
Answer:
Explanation:
The F1 generation refers to the first filial generation. Filial generations are the nomenclature given to subsequent sets of offspring from controlled or observed reproduction. The initial generation is given the letter “P” for parental generation.
O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O
hello im chiilin lets talk o {} o
Answer:
O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O O_O
Explanation:
Which of the following is NOT a part of Darwin's theory of evolution by natural selection?
a:More offspring are produced than can generally survive.
b:Individuals in a population vary in many ways.
c:Changes in an individual's genetic material are usually harmful.
Answer: inheritance of acquired characteristics
Explanation: Because you smell like porch Darwin
Please help!! PLEASE!
Answer:
1-Sparta, 2-Sparta, 3-Sparta, 4-both, 5-both, 6-Athens, 7-Athens, 8-Athens, 9-Sparta, 10-Athens, 11-Athens, 12- Sparta, 13-Athens, 14-Sparta, 15-Sparta
Explanation:
Answer:
I copied my previous answer to this because I think they are the same questions. BTW how many times did u post the same question??!
1- Athens
2- Spartans
3- Spartans
4- I think it is both, don't get me wrong
5- I think it is Spartans
6- Athens
7- Athens
8- Athens
9- Spartans
10- Athens
11- Athens
12- Spartans
13- Athens
14- Spartans
15- Spartans
There you go. Hope this helps :D
The type of wave that squeezes and releases the rock back to the same shape
Answer:
Seismic Wave
Explanation:
How does interphase prepare cells for mitosis
Answer: During interphase, the cell copies its DNA in preparation for mitosis. Interphase is the 'daily living' or metabolic phase of the cell, in which the cell obtains nutrients and metabolizes them, grows, reads its DNA, and conducts other "normal" cell functions. This phase was formerly called the resting phase.
Explanation:
Which statement best describes the law of conservation of energy?
A. Energy cannot change forms in closed systems.
B. The total energy in an isolated system can only decrease.
C. Energy is neither destroyed nor created during energy
transformations.
D. Energy can be destroyed only in open systems.
Answer:
c
Explanation:
How does meiosis differ from mitosis?
A. It increases the amount of DNA
B. It increases the number of cells
C. It reduces the amount of DNA
D. It decreases the number of cells
Answer:
Cells divide and reproduce in two ways, mitosis and meiosis. Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells. Below we highlight the keys differences and similarities between the two types of cell division.
Explanation:
*btw i used my science book for this and Hope It Helps :)
Answer:
It increases the number of cells.
Explanation:
Which NPSG is especially important in behavioral health care programs?
A. Identify patient safety risk.
B. Use medicines safely.
C. Prevent infection.
D. Identify patients correctly.
pls help
Answer:
Identify Patient safety risk.
What two things can make a molecule polar?
Answer:
Polar molecules must contain polar bonds due to a difference in electronegativity between the bonded atoms.
Explanation:
Answer:
The presence of polar bonds and the shape of the molecule
Explanation:
This is the correct answer