Answer:
Silicon. Silicon is, by far, the most common semiconductor material used in solar cells, representing approximately 95% of the modules sold today
Explanation:
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pls mark brainliest
Is fertile soil a renewable or nonrenewable resource?
Answer: fertile soil is an non renewable resource
Explanation:
What biotic and abiotic factors live in an oasis and what are their roles as resources?
Answer:
Precipitation, water availability, sunlight, and temperature are all abiotic factors. Deserts are characterized by their lack of rainfall. Although we usually think of deserts as being hot, some deserts can be cold too. Biotic factors are all the living things in an ecosystem. So organisms such as cacti and the kangaroo rat.
what property of the atmosphere most determines whether pollutants get blown away or become trapped locally
Stability is the property of the atmosphere that most determines whether pollutants get blown away or become trapped locally.
What is a pollutant?A pollutant is any type of contaminant substance and/or material that is found in the air, water or soil.
In the air, the main pollutant is carbon monoxide, which is a highly toxic contaminant substance.
This substance (carbon monoxide) can cause serious harm to the health of humans and animals.
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What is the difference between a mold and a cast fossil?.
The addition of aldosterone _______. resulted in no change in urine volume decreased the urine volume to zero decreased the urine volume increased the urine volume
The addition of aldosterone resulted in a decrease in the urine volume and is denoted as option C.
What is Aldosterone?
This is produced in the adrenal gland and it helps to stimulate absorption of sodium by the kidneys.
It also regulates water and salt balance in the body which is why its addition leads to a decrease in the urine volume.
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9.
Which species is the most recently evolved?
3
4
H
А
Answer:
You need to put the species... I can't figure it out if there's just random numbers and letters...
Explanation:
Empties bile into the duodenum from the gallbladder.
Bile empties from the gallbladder into the bile duct. The bile duct merge with the pancreatic duct to form the ampulla of Vater, which empties into the duodenum.
What releases bile into the duodenum?The gallbladder
The bile made by the liver is kept in the gallbladder. This is a pear-shaped organ found below the liver. Then, when food is eaten, the gallbladder compressed and releases stored bile into the duodenum to help break down the fats.
Thus, Bile empties from the gallbladder into the common bile duct.
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In the past, waste from mining was
Answer:
waste rock and tailing mineral resources
Why are some body cells responsive to a particular hormone, whereas others are not?.
Answer:
Why are some body cells responsive to a particular hormone, whereas others are not?
Responsive cells express a specific receptor for the hormone.
Explanation:
The graph below shows the breakdown of radon-222.
What is the half-life of Rn-222?
What fraction of the original sample will be left after 3 half-lives?
Answer:
Answer: 7.949\ \text{days}7.949 days
Step-by-step explanation:
Given
The half-life of a sample is T_{\frac{1}{2}}=3.823\ \text{days}T
2
1 =3.823 days
Decay is given by
A=A_o2^{\dfrac{-t}{T_{\frac{1}{2}}}}A=A
o
2
T
2
1
−t
After 3 half-lives, one-eight of the sample is left
Insert the values
\begin{gathered}\Rightarrow \dfrac{A_o}{8}=A_oe^{\dfrac{-t}{T_{\frac{1}{2}}}}\\\\\Rightarrow e^{\dfrac{t}{T_{\frac{1}{2}}}}=8\\\\\text{Taking log both sides}\\\Rightarrow \dfrac{t}{T_{\frac{1}{2}}}=\ln 8\\\\\Rightarrow t=3.823\times \ln 8\\\\\Rightarrow t=7.944\ \text{days}\end{gathered}
⇒
8
A
o
=A
o
e
T
2
1
−t
⇒e
T
2
1
t
=8
Taking log both sides
⇒
T
2
1
t
=ln8
⇒t=3.823×ln8
⇒t=7.944 days
We should NEVER keep volatile solvents, such as ether, acetone, or benzene, in an open beaker or Erlenmeyer flask because vapors can ignite and flashback if they reach a flame. All BUT ONE safety precaution is necessary when using volatile solvents. That is _____.
WILL MARK BRAINIEST
a. Work under a fume hood
b. Know how to engage the safety shower
c. Always heat in a closed container
d. Know the location of the fire extinguisher
Work under a fume hood is the safety precaution is necessary when using volatile solvents.
What is the benefit of fume hood?A fume hood is very important in order to remove toxic or hazardous materials from a work area. Due to this device, the personnel in that area are protected.
So we can conclude that work under a fume hood is the safety precaution is necessary when using volatile solvents.
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In many cities, wastewater travels through sewer lines to be processed at a wastewater-treatment plant. The treatment plant uses many methods to
break down materials in wastewater and make sure materials are safe before
release. Which of the methods used during treatment is meant to kill diseases in materials in wastewater?
A. Burying of solid waste
B. Heating of liquid waste
C. Aeration of liquid waste
D. Settling out of solid waste
Answer: (A) Burying of solid waste
Explanation: took the test!
The perception of color depends on the __________ of light an object reflects.
Answer:
The answer is Wavelength.
Explanation:
The perception of color depends on the Wavelength of light an object reflects.
Help me pleaseeeeeeeeeeeeeeeeeeee
what adaptation has the stigma developed that helps with fertilization?
Answer:
Pollen is caught by the stigma and then tunnels down through the style to fertilize the ovules in the ovary.
Explanation:
The epithelium of the nasal cavity, nasopharynx, trachea and bronchi is ciliated ___________________________________ columnar epithelium, often with goblet cells
Answer:
pseudostratified
Explanation:
The epithelium of the nasal cavity, nasopharynx, trachea and bronchi is ciliated pseudostrtisfied columnar epithelium, often with goblet cells
Help me right now! For a brainlest!
How are dinosaurs are like ( Related) crocs
How are dinosaurs like( related) chickens
Answer (How dinosaurs are related to crocodiles):
Along with pterosaurs and dinosaurs, crocodiles were an offshoot of the archosaurs, the "ruling lizards" of the early to middle Triassic period; needless to say, the earliest dinosaurs and the earliest crocodiles resembled one another a lot more than either resembled the first pterosaurs, which also evolved from archosaurs. What distinguished the first crocodiles from the first dinosaurs was the shape and musculature of their jaws, which tended to be much more deadly, as well as their relatively splayed limbs—as opposed to the straight, "locked-in" legs of theropod dinosaurs. It was only well into the Mesozoic Era that crocodiles evolved the three main traits with which they're associated today: stubby legs, sleek, armored bodies, and marine lifestyles.
Answer (how dinosaurs are related to chickens):
The scientific evidence comes from a study in which the amino-acid sequence from T. Rex collagen was compared to that of various modern species. It proved to be more similar to the chicken than any other creature alive today.
So, are chickens dinosaurs? No – the birds are a distinct group of animals, but they descend from the dinosaurs, and it’s not too much of a twist of facts to call them modern dinosaurs.
There are many similarities between the two types of animal, largely to do with bone structure. It also appears that many of the dinosaurs had feathers – not for flight, but as adapted scales, to assist in heat regulation, and/or to assist in courtship displays, as in modern birds.
Pick a plant and an animal FROM MIAMI that have been particularly affected by climate change in your area and explain how they each have changed
all my points along with brainliest
Answer:
Vanilla orchid
crocodiles
Explanation:
The plant doesnt have enough water due to scarcity of rain.
The water is evaporated and the crocs live in the water
Which environment is most likely to have the greatest levels of biodiversity?
HURRY
If element X has 5 valence electrons, what will its ionic charge be?
options:
-3
+5
-5
+3
Answer:
-5
Explanation:
Here are the charges:
Neutrons= 0 (zero)
Protons= + (+1) (positive)
Electrons= - (-1) (negative)
If there are 5 electrons in the valence shell then: 5(-1) = -5
Which best describes the role of sunlight in the process of photosynthesis
a Light provides the energy to make sugars from smaller carbon compounds.
b Light provides the energy to break down sugars into smaller molecules.
C Light provides the energy to break down sugars into smaller molecules.
D Light provides the energy to build large carbohydrates from simple sugars.
Answer:
c
Explanation:
The answer is c because photocythacis makes it so that plants can make their self food and make oxygen
Imagine you accidentally knocked a vase off a table and onto the floor. Describe the forces that would act on the vase before and during its fall!
The forces which acts on the vase before the fall include:
Force exerted by the table.Force of gravity.DragWhat is Force?This is described as an influence which changes the motion of an object. The force exerted before motion is that which is exerted by the table , drag and force of gravity.
During fall, all other forces act except that exerted by the table thereby making it the most appropriate choice.
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How could radiation affect the growth of a human organism? And what amount of radiation would cause a human to stop growing ?
Answer :Whether the source of radiation is natural or man made whether it is a small dose of radiation or a large dose of radiation there will be some biological effects.
Explanation: radiation is a part of human body and it is natural.
Define stroke volume
It's the volume of blood pumped through a vessel of the heart in one beat.
Which of the following is an outer covering that protects the other body parts?
Brain
Eyes
Muscles
Skin
Answer:
its skin
Explanation:
skin is what covers the body parts !!
Which of the following is NOT true of
evolutionary trees?
A. They are a hierarchy of best to worst organisms.
B. They can show anatomical or molecular differences.
C. They all use different information.
D. They aren't all the same.
The statement that is not true and correct about evolutionary trees from the options is that They aren't all the same .
What are evolutionary trees?Evolutionary trees are trees that help to arrange and reconstruct the evolutionary history of species or groups of organisms belonging to either genera, families, or orders. The trees reconstruct and show case two form of information that is related to evolutionary change, cladogenesis and anagenesis.
Therefore, They aren't all the same is not true of evolutionary trees.
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She's cooking dinner
Ema said
This is an independant clause, a full sentence, it is not a dependant clause cause it doesn't need a helping sentence to make it a full sentence
What does random mean and how does it apply to genetics?
Answer:
We
Explanation:we
Answer:
Answer: Alleles are sorted randomly into cells.
Explanation:
If your small intestine was unwound how long would it be:.
Answer:
The length of the small intestine can vary between about 10 feet (3 meters) to over 16 feet (5 meters). For comparison, a standard basketball hoop is 10 feet tall. The different sections of the small intestine are also different lengths. The ileum is the longest section while the duodenum is the shortest.
Explanation:
According to healthline this is your answer :D
Which of the following is a characteristic of unicellular organisms?
1. They can possess tissues and organs.
2. All of their functions are performed by a single cell.
3. They are usually microscopic.
4. Each of their cells is specialized to perform a specific function.
Which enzyme is produced by the salivary glands and begins the chemical digestion of carbohydrates?
Answer:
salivary enzyme amylase
Explanation:
salivary enzyme amylase begins to break down food starches into maltose.