Answer:
1. Polonium
2. Mercury
3. Arsenic
4. Francium
5. Lead
these 5 elements are very very dangerous...
hope it helps u plz mark as brainlist
The most toxic elements on the Periodic Table are :
Polonium (radioactive metalloid)Mercury (toxic metal)Arsenic (classic poison)Francium (extremely reactive)Lead Plutonium (radioactive heavy metal)2. Which of the following are liquid at room temperature?
A)Saturated fats
B)Unsaturated fats
C)Animal fats
D)Butter
Answer:
B) Unsaturated fats are liquid at room temperature while
Saturated fats are solid at room temperature.
An older female Belding's ground squirrel has been transplanted from her home colony to a new colony; therefore, she has no close kin nearby. Nevertheless, she risks her life to make an alarm call, warning the colony of an approaching predator. This is an example of
Answer:
maladaptive behavior.
Explanation:
Maladaptive behavior is one which hinders the adaptation to a new environment or condition.
They are also used as a coping mechanism by people who have social anxiety.
She risking her life to make an alarm call, warning the colony of an approaching predator was a way of coping with herb fears which indicates maladaptive behavior.
What are some common themes of biology? Select all that apply.
The study of genetics
The study of chemical reactions
The laws of motion
All living things require energy
The study of ecology
Answer:
the study of genetics. all living things require energy
Answer:
The study of ecology, genetics and living things require energy.
Explanation:
Biology can be defined as the science that deals with the study of living beings and its surrounding. The interaction between the plants, animals and various abiotic components that is necessary for the growth and development is also studied under biology.
The study of ecology includes the interaction between the plants and animals in which they are living.
The genetics involve the study of inheritance and disorders related to it.
All the living components of life requires energy to survive.
The process whereby the earth’s life changes over time through changes in genes of populations of organisms in succeeding generations is called____.a. emigration.b. mutation.c. natural selection.d. evolution.e. genetic drift.
Answer:
Option d (evolution) is the right answer.
Explanation:
This concept postulates that perhaps the different kinds of plants, animals, as well as other living objects aspects universe originate in several other currently existing categories and because the focus on possible is sensitive to variations in generation after generation. Evolution theory has been one of the cornerstones of the contemporary biopsychosocial model.Some other possibilities don't relate to either the scenario is given. Enough that option d seems to be the correct decision.
ANSWER ASAP PLEASEEEEEE!!!!!! ILL GIVE 100 POINTS!!
Answer:
D is correct
Explanation:
A characteristic of benign prostatic hypertrophy includes which of the following? (Select all that apply.) Urgency Hesitancy Low back pain Weak urine flow Incomplete bladder emptying
Answer:
Frequent urgency to urinate, difficulty starting urination
Explanation:
Drinking alcoholic or caffeinated beverages increases urine output more than drinking an equivalent amount of water.
RequireD:
a. How do you think these beverages affect ADH secretion?
b. Would urine osmolarity be increased or decreased?
Answer:
A) ADH secretion decreases. B) Urine osmolarity decreases.
Explanation:
Antidiuretic Hormone or ADH is responsible for the reabsorption of water through the kidneys.
A) Drinking alcoholic and/or caffeinated beverages decreases the release and effect of ADH so the water does not get absorbed as much as it should, which in turn results in more urination.
B) Osmolarity is a term used to express the concentration of a solution in terms of a certain particle. Since less ADH secretion results in more water being in the urine, this lowers the concentration of the urine. So urine osmolarity would be decreased.
I hope this answer helps.
You watch a scientist dissolve some sugar in a liter of water and then place some of this
solution into a dialysis bag, tying both ends shut. The she places the bag into a beaker of
distilled water. What word best describes the solution outside of the bag?
Answer:
Hypotonic
Explanation:
The tonicity of a solution describes its solute composition and its ability to exert osmotic pressure on a membrane. A solution can attain three tonicity states viz: hypotonic, hypertonic and isotonic.
A solution is said to be HYPOTONIC if its solute concentration is lesser than that of its surrounding environment. In other words, the concentration of solute in the solution is lower in comparison to another. This is the case of the solution outside the dialysis bag.
The solution inside the dialysis bag contains more concentration of solute because of the sugar placed in it. The solution outside the bag contains distilled water with no solute, hence, it is HYPOTONIC to the solution inside the bag.
What is scientific method? Atleast three sentences! Thank youu!!!
Answer:
a method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.
Explanation:
Answer:
The Scientific Method is a series of steps used by a scientist or just a regular person to help them complete an experiment. It consists of systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses. It could also be used to study and learn new and different things.
Which of the following most directly influences a measurable outcome in an experiment. An independent variable A variable hypothesis A dependent variable Previous information
Answer:
An independent variable
Explanation:
An experiment consists of two variables viz: independent and dependent variable. Independent variable is the variable that the experimenter controls in order to influence or effect a change in the measurable variable called dependent variable. As the name suggests, the dependent variable is dependent on the independent variable.
For example, a scientist is trying to conduct an experiment on how the caffeine level in different types of drink affects the time of sleep in individuals. The independent variable in this experiment is the TYPE OF DRINKS because it is the variable controlled by the experimenter in order to influence the time of sleep (measurable outcome).
Answer:
B.
Explanation:
What are the ordered pairs?
Answer:
Ordered pairs are 2 numbers that show where a specific point is on a gird
Example:
(3,2)
This ordered pair would mean 3 over on the x-axis (horizontal) and 2 over on the y-axis (vertical)
another thing to keep in mind, since x comes before y in the alphabet, x also comes before y in ordered pairs (x,y)
The pathophysiology of _________ is one in which the pericardial sac fills with blood to the point where the chambers of the heart no longer fill adequately, usually secondary to trauma.
Answer:
The correct answer is : cardiac tamponade.
Explanation:
Cardiac tamponade is a medical condition in which heart has extreme compression or pressure due to the fluid or blood filled in the sac surrounding the heart and prevent the heart to fill properly.
IN other words it is case of extreme pressure on heart due to the fluids like blood collect inside the space present between the pericardial sac that leads ti inadequate filing of heart chambers.
It is caused by mainly by chest trauma, cancer, and chest related underlying disease or trauma.
Thus, the correct answer is : cardiac tamponade.
What is the main goal of the United Nations Framework Convention on Climate Change? In recent years, the controversy surrounding environmental issues has decreased.
Answer:
main goal of the United Nations Framework Convention on Climate Change is to reduce and normalise greenhouse gas concentrations to a level that would prevent dangerous human induced interactions with the climate system.
Explanation:
Answer:
to prevent the continued rise of greenhouse gas concentrations
Explanation:
How could a change in the number of primary consumers affect the population size of the secondary consumers?
Answer:
it will cause death of secondary consumer
Explanation:
energy won't be distributed and it will spoil the food chain
What some possible uses for scientific model
Answer:
Down here
Explanation:
Scientific models are used to explain and predict the behaviour of real objects or systems and are used in a variety of scientific disciplines, ranging from physics and chemistry to ecology and the Earth sciences.
In a range of scientific disciplines, from physics and chemistry to ecology and the Earth sciences, scientific models are employed to explain and forecast the behavior of real things or systems. The correct options are a and b.
What are scientific models?The reduced visual representations of the intricately analyzed natural systems are known as scientific models.
Scientific models, which can be two-dimensional or three-dimensional, are crucial to scientific study because they allow researchers to demonstrate the viability of their hypotheses and determine whether they can be supported or refuted.
In order to help the public understand complex models, scientists utilize scientific models to convey them to them in simple terms.
To learn about animals, we use models of that animal or its body parts. Scientific models are used to learn scientific things that can be possible to learn in real-life objects.
Therefore, the correct options are a. Scientific models are employed to explain. b. Forecast the behavior of real things or systems.
To learn more about scientific models, refer to the link:
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The question is incomplete. The complete question is given below:
What are some possible uses for the scientific model?
a. Scientific models are employed to explain.
b. Forecast the behavior of real things or systems.
c. To collect the model for the showpiece.
d. To put them in museums.
Where is the most energy transferred in a food web? I need help asap!
Identify science vs. pseudoscience
A student wants to test the hypothesis that plants need soil to grow. Identify the independent
and dependent variables for this experiment, and three variables the student should control
during the experiment.
Answer:
Independent variable: Adding/not adding soil.
Dependent variables: Does the plant grow? Amount of leaves, plant length.
Controlled variables: Type of plant used, amount of sunlight received, pot used for plant, amount of water given, temperature of soil, etc.
Explanation:
Independent variable: The thing that you want to change. To see if plants need soil to grow, you would need to either add or remove soil altogether.
Dependent variables: The thing that is being measured. By adding your independent variable, you should be able to answer certain questions.
Controlled variables: Things you want to keep the same for each experimental group. For example, if you used different plants, your results could be affected negatively as some plants might rely on soil less than others/grow at a slower or faster pace.
As global warming continues, the oceans absorb more of the Earth’s heat. What term describes the ocean as a storage location for this heat? Heat bin Heat sink Heat storage Heat vent
What is the most common site for Mycobacterium tuberculosis in the bone? a. Vertebral column b. Long bones c. Hips d. Ankles
Answer:
A.
Explanation:
TB is an infection of the lungs,where the alveolar are attacked by bacteria ( Mycobacterium tuberculosis)leading to cough, with blood stained sputum,chest pain etc.
This Vertebral Column is the common site of T.B .It usually spread through the blood (arterial or venous routes)to the bones ,joints and other other organs in the body.
Generally,TB affects majorly the lungs,where is is called pulmonary TB.Therefore when it spreads to other part od the body it is called extrapulmonary TB.
Specifically, the lower thoracic vertebrae and upper lumbar are the major sites. This condition is called Spinal Tuberculosis,and its major signs is pain sensations at the spine locations described above.
Its symptoms include pain at the spine, stiffness of the vertebra , some degree of deformities
The natural role of restriction enzymes in bacteria is to make conjugation more efficient. allow transposons to move to another place in the chromosome. protect the cell from invading phages. allow cells to accept foreign DNA. provide the cell with new phenotypes, such as antibiotic resistance.
Answer:
protect the cell from invading phages
Explanation:
The natural role of the restriction enzymes is to protect the cell from invading phages.
The restriction enzyme is an enzyme that functions by cutting DNAs from some pre-identified sites on the DNA. They are primarily found in bacteria where they protect the cell from invasion by foreign DNA from phages.
Once a phage invades a bacterium, the restriction enzyme quickly acts by cutting the phage's DNA into smaller pieces, leading to the destruction of the DNA and hence, the protection of the bacterium cell.
what is the definition of botany
NEED ANSWER ASAP!!
8) A _____ has a nucleus, a corona, and a tail.
meteors
comet
stars
planet
asteroid
Answer:
I'm pretty sure it's a comet!
Explanation:
A comet's nucleus is like a snowball made of ice. As the comet nears the Sun, the ice starts to melt off, along with particles of dust. These particles and gases make a cloud around the nucleus, called a coma. A comet's nucleus, or heart, is the solid chunk of something in the center of its fuzzy coma.
Most comets have two tails. ... Because the comet dust particles are so small, they are pushed away from the Sun into a long tail. Another tail is made of electrically charged molecules of gas (called ions). Very rarely a comet will have a third tail made of sodium, which we usually don't see with our unaided eyes.
Very sorry if this is incorrect, I hope this helps!
~Kweenie~
where do cell get their food from
Answer:
Blood
Explanation:
Cells get their food from the blood which is absorbed from the small intestine.
Hope it helps :)
PLEASE HELP! Four friends—Tom, Jake, Mitch, and Kim—are having a meal at their favorite restaurant. Arrange the food ordered by each person according to its carbon footprint, from smallest to largest.
The food ordered by each person according to its carbon footprint, from smallest to largest.
Kim who has vegetable salad containing beans and peasTom who has scrambled eggsJake who has grilled salmonMitch who has broiled steakWhat is carbon footprint?It is the total amount of carbon dioxide released due to the activities of the individual.Non vegetarian has highest carbon footprint than vegetarians.To know more about Carbon footprint here
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According to MacArthur and Wilson's theory of island biogeography, both the land area of an island and the _____________________ contribute to species diversity
Answer:
According to MacArthur and Wilson's theory of island biogeography, both the land area of an island and the distance from the mainland or continent contribute to species diversity
Explanation:
The ecologists MacArthur and Wilson took the term island biogeography theory to refer to the predictions about the number of species that could be inhabiting on an island.
Island biogeography theory establishes that the two factors that affect species richness in natural communities on an island are the distance from the mainland and the size of the island.
At the same time, these factors affect inmigration and extinction rates. According to the theory, islands that are closer to the continent have higher possibilities of receiving immigrants than those islands that are located farther from the mainland. This is the effect of distance.
The effect of size is reflected in the relation between island size and species diversity. In smaller islands, the probability of extinction is higher than in bigger islands. Bigger islands can have more species than smaller ones.
In the case of two islands of the same size and different distance to the mainland, both of them will have the same extinction rate, but the one closer to the continent will have a higher immigration rate, and so, a higher amount of species. The S value will be higher on the island closer to the continent.
When a fire breaks out, immediately use a fire extinguisher. true or false?
Answer:
true
Explanation:
1. make sure you understand the instructions first then you can proceed
A 46-year-old man is currently enrolled in a Phase 2 study of a drug for severe diabetic neuropathy. While the study is on-going, a new drug becomes commercially available that may have equal or greater benefit to the subject. The investigator should do what with the client?
Answer:
The correct answer would be -provide detailed information about the research and drug and let the man decide if he wanted to withdraw from the research or take new drug.
Explanation:
In this type of case where there is a drug that is in on going study or in clinic trail which is showing promising result, investigator should provide the client or subject a comprehensive account of the drug with is pro and cons and side effects.
He should discuss about the both currently available drug in market and ongoing research drug and let the man decide whether he want to be part of the research or withdraw from the research.
A population of birds colonizes an area in which the insects upon which they feed live inside trees. Which of the following events accounts for an observed increase in average beak size in the bird population over time?
a. Decreased fitness of the insects, allowing the birds to catch them more easily
b. Increased fitness of large-beaked birds, leading to natural selection
c. Increased fitness of the large-beaked birds, creating a new species
d. Decreased fitness of small-beaked birds, creating a new species
Increased fitness of large-beaked birds, leading to natural selection. So, the correct option is (B).
What is Natural Selection?Natural selection is defined as the differential survival and reproduction of individuals due to differences in phenotype which is a major mechanism of evolution, a change in the genetic properties of populations over generations.
For Darwin, natural selection is a drawn-out, complex process involving many interrelated causes where it requires variation in populations of organisms. For the process to work, at least some of that variation must be heritable and passed on to the organism's descendants in some way.
Example of Natural selection is birds with larger beaks are better able to survive in the new environment.
Thus, increased fitness of large-beaked birds, leading to natural selection. So, the correct option is (B).
Learn more about Natural Selection, here:
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Kathleen is testing a mixture containing a certain substance. She takes a sample from the top and the bottom. The sample from the bottom has more of the substance than the sample from the top. What is this mixture?
Answer:
w mixture of water and sand