The density of the average egg will be slightly greater than that of water, so it will sink. To make the egg float, we have to make the water more dense by adding salt. For 1 cup of water, adding 3 tbsp. of salt should be about enough to make the egg float.
When studying animal behavior, the distribution of organisms within a choice chamber can be studied to identify animal preferences. 20 Isopods are placed in a 2-choice choice chamber. A cotton ball dampened with distilled water is placed in Chamber A; A dry cotton ball is placed in Chamber B. After 15 minutes 2 Isopods are located in Chamber B, and 18 isopods are found in Chamber A. Perform the chi-squared test to determine if the distribution of isopods is significant or due to random chance.a. chi-squared is 1.20, no it is not significant.
b. chi-squared is 8.42, no its not significant.c. chi-squared = 12.8, yes it is significant.d. chi-squared is 18.59, yes it is significant.
Answer:
The correct option is c. chi-squared = 12.8, yes it is significant.
Explanation:
Available data:
20 Isopods are placed in a 2-choice choice chamber. Different conditions were applied15 minutes later: 18 isopods are found in Chamber A and 2 Isopods are located in Chamber B.H₀= Individuals will be equally distributed
H₁ = Individuals will not be equally distributed.
Chi square= ∑ ((O-E)²/E)∑ is the sum of the terms
O are the Observed individuals: 2 in chamber B, and 18 in chamber A.
E are the Expected individuals: 10 in each chamber
X² = ∑ ((O-E)²/E) = ((2 - 10)²/10) + ((18 - 10)²/10) = 6.4 + 6.4 = 12.8
X² = 12.8
Freedom degrees = K – 1 = 2 - 1 = 1(K = Independent variables = dry cotton and wet cotton)
Significance level, 5% = 0.05 Table value/Critical value = 3.8412.8 > 3.84 meaning that the difference between the observed individuals and the expected individuals in each chamber is statistically significant. Not probably to occur by random chances.
There is enough evidence to reject the null hypothesis. The distribution of isopods is statistically significant.how to solve problems of Transportation by using science
‼️BRAINLIEST‼️ what is the difference between mitosis and meiosis?
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.
sorry if this isn't what you are looking for... Stay safe and have a great day!!! :D
deforestation causes an increase in CO2 because when trees are cut down, nothing absorbs the carbon
true or false
Answer:
♡hi luv ♡
-- it's true
~Clara ✧･ﾟ: *
Explanation:
Can someone help with this ?
Answer:
Explanation:
Similarities: Both are moving particles between different levels of concentration.
Differences: Diffusion, however, is the transport from a high to low concentration and requires no energy, while Active Transport is the movement from low to high concentration and requires energy to do so.
HElPP MEE PLEEAAASEEEE :( ill mark u brainliest- thankyou so muuch
Answer:
it's the first one with the rock
Explanation:
I dont need brainliest don't worry.
Explain how reproduction take place in mustard plant
Answer:
It is a winter plant that inseminates very quickly at high temperatures.
Explanation:
Mustard is an annual plant. Its root is spindle-shaped, well developed, and the stem is erect, branched, small, 50-90 cm high. The lower leaves are larger with a stalk, and the upper ones are smaller sitting. Mustard blooms in late May and early June.
The fruit ripens in the second half of July. The flowers are yellow, fragrant, very honey-bearing with a lot of pollen powder, and are collected in clustered inflorescences. They are pollinated by insects.
The fruit of the mustard is a cylindrical shell, hairy, 2-5 cm long, and about 5 mm wide. The growing season of mustard is 110-130 days.
Amylase is an enzyme found in saliva that breaks down starch . The enzyme is currently functioning at its optimal pH of 7 and optimal temperature of 32 degrees * C Which of the following could result in an increase in the reaction rate?
Choose 1 answer : А)Decreasing enzyme concentration B)Placing the reactants in an environment at 10 degrees * C C)Providing an environment with a pH of 9 D)Increasing substrate concentration
Answer: D- Increasing substrate concentration.
Explanation: Increasing substrate concentration could increase the rate of the reaction, as there would be more substrate to bind with the enzyme. Hope this helps have a great day :) btw i got it right on khan academy.
The option that could result in an increase in the reaction rate would be increasing substrate concentration.
For enzyme-catalyzed reactions, the substrates are the reactants of the reaction.
Generally for reactions, an increase in the concentration of reactants will increase the rate at which products are formed.
Thus, irrespective of the presence or otherwise of the amylase enzyme, increasing the substrate concentration would increase the rate of reaction.
Since the optimal pH and temperature remain 7 and 32 degrees Celsius respectively, changing these factors will only reduce the rate of reaction. Decreasing the concentration of the enzyme would also reduce the rate at which products are formed.
More on enzyme-catalyzed reactions can be found here: https://brainly.com/question/6658074?referrer=searchResults
3. Choose the answer that describes biological weathering.
A. acid in water acting on limestone
B. stone and boulders moved by water
C. salt crystallization forming tafoni
D. lichen growing on rocks
Answer:
should be B
Explanation:
Answer:
c
Explanation:
Lichen growing on rocks and types of bacteria produce chemicals that weather minerals 3 to 4 times faster than normal.
Carbon is an important element for biological life because it-
is always attached to oxygen atoms.
can form varied, large, and intricate molecules.
is stable and does not easily go through changes.
is only found in plant species, such as trees.
Answer:
can form varied large and intricate molecules due to tetra valency and catanation chararter
The two types of reproduction are....
Answer:
Sexual & Asexual
Explanation:
Hope this helped!
Answer:
asexual and sexual.
Explanation:
trust me on this one
Jamail and Sheila are arguing about the weather. Jamail thinks that St. Louis will be colder and
rainy in a couple of days. Sheila believes that St. Louis will be warmer and wet. Who is correct?
Write a short answer response in the box provided. Remember to use Claim, Evidence,
Reasoning strategy to answer the question.
PLEASE ANSWER!!! <3
which of the following is a description of a resource that belongs to a country with a high carrying capacity a. water comes directly from bodies of water
b. food is not alwasy available c. homes are small and house many people d. food is brought in from other places
Answer:
food is brought in from other places
Explanation:
The description of resources that fits a country with a high carrying capacity would be water coming directly from bodies of water.
What is carrying capacity?It refers to the maximum number of individuals of a particular species that an environment can support based on the resources it has.
An environment with a high carrying capacity will be able to support a large population and cater to the resources the population needs.
Thus, water coming directly from bodies of water in an environment fits an environment that is able to cater to the needs of its population.
More on carrying capacity can be found here: https://brainly.com/question/2375972
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The first step in mitosis is:
1.chromosomes pull away from each other
2.the nucleus of the cell forms
3.a cell splits apart
4. second set of chromosomes is produced
Answer:
(4) a second set of chromosomes is produced
Explanation:
Answer:
It is D. a second set of chromosomes is produced
Explanation:
Hope this helped have an amazing day!
why do you think the source of information related to job are important for the concerned people
Answer:
It’s important to avoid extra costs, time and wrong knowledge/ idea.
Explanation:
I think the source of information related to job are important for the concerned people in order to enable them have the best view and position on jobs available. This helps them to weigh their options very well before taking decisive actions.
It also helps to avoid extra costs, time and wrong knowledge/ idea which in turn promotes general efficiency of such group of people.
Photosynthesis stores energy.
Please select the best answer from the choices provided
True
False
Answer:
True
Explanation:
it not only stores energy but it feeds the plant
I think that would be true.
Which of the following is NOT a product of glycolysis?
ATP
glucose
pyruvic acid
Answer: glucose
Have a blessed day!!! :)
3. M. Garcia noticed pain on the left side of his chest under his arm The pain was stronger the
next day and his wife noticed patches of a red bumpy rash in the area of the pain. By the time
he saw his doctor that afternoon blisters and additional red patches had emerged. The doctor
asked about childhood illnesses and confirmed that Mr. Garcia had had chickenpox.
What is the possible diagnosis?!
H
Answer:
The possible diagnosis of M. Garcia with chest pain radiating to the left arm and the presence of red patches and vesicles is Herpes zoster.
Explanation:
Herpes Zoster is a disease produced by the varicella-zoster virus, and has a history of having had chickenpox in childhood or youth.
The varicella virus remains dormant in the body for several years, and can reappear, presenting as a localized and painful rash that can produce a neuritis in the affected territory.
The clinical symptoms of the M. Garcia —pain in the thorax irradiated to the left arm, red patches and vesicle-blisters— associated to the antecedent of chickenpox make think of a diagnosis of Herpes Zoster.
Which correctly lists three places that fresh water is found?
Answer:
Ice caps and glaciers - 69%
Groundwater - 30%
Surface water - less than 1 %
Explanation:
Fresh water is a type of water, found in nature, in which there is no salt. It is water suitable for consumption (provided it is treated) for humans and animals. Fresh water is also used in agriculture. Only about 2.5% of the water found on our planet is sweet. It is mainly found in polar caps and glaciers, groundwater, surface water.
With the growth of the world population, fresh water has become increasingly scarce. Overuse, waste and water pollution are the main problems related to fresh water today.
As it is a precious and scarce mineral resource, society must be aware that, in order not to run out of water in the near future, it is necessary to avoid waste, use it rationally and do not pollute rivers, lakes and water sources.
Answer:
C).ice sheets, water vapor, rivers
:)
Explanation:
Which air pollutant is most likely to cause bronchitis? carbon monoxide ozone emis
Answer:
ozone
Explanation: i took the test
What are the 7 levels of scientific classification/taxonomy in order from highest
to lowest?
how do cells in animals (o.r. birds horses humans etc.) get energy.
Answer:
From the mitochondria
Explanation:
The MOST complex level of organization within large organisms, such as elephants, is the organ system. True or false
Answer:
False
Explanation:
Answer:
true
Explanation:
It has the most of complex level of organization within large organisms, such as elephants, is the organ system.
I need helpppp please
Answer: Animals move when their brains send signals through nerve cells telling the muscle cells to contract. The action of pulling and relaxing of muscles allows animals to move. ... The cells all rely on the same process to get their energy: cellular respiration, a process that releases energy by combining glucose and oxygen.
hope this helps... stay safe and have a great day...
What genetic condition results in the trait indicated by the blue color being
expressed in the individuals shown here?
Answer:
ressessive
Explanation:
because it is what present by its phenotype
Blue color being expressed in the individuals shown here is recessive trait.
What is recessive trait?In terms of genetics, the term "recessive" describes the connection between an observed trait and the two inherited forms of a gene associated with that feature.
Each gene has two alleles that an individual inherits from each parent. When a characteristic is recessive, both of the (recessive) alleles of the gene that causes the trait must be present for the trait to manifest. When there is only one copy of an allele, it has no effect at all.
This is in contrast to a dominant trait, which can only be expressed when one of the two alleles is present.
Therefore, Blue color being expressed in the individuals shown here is recessive trait.
To learn more about recessive trait, refer to the link:
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What are 6 signs you're bottling up your emotions?
(Social Psychology and personality Science)
1. You rarely yell or cry, but you can have an anger outburst over small issues.
2. You avoid and distract yourself whenever you start to feel uneasy.
3. You feel like you’re a different person around others than you are by yourself.
4. You often feel uncomfortable around highly emotional people who express anger, sadness, or other emotions visibly.
5. You feel distanced from others, experiencing life from a third-person perspective.
6. You avoid confrontation and you never address the causes of your emotions.
Sexual reproduction involves (one / two) parent/s to produce a new
individual of the same species.
Asexual reproduction (does / does not) cause variation. All the daughter
cells have the same / different) resistance to diseases.
Answer:
True-Did you need help?
Explanation:
Answer:
Sexual reproduction involves two parent/s to produce a new individual of the same species.
Asexual reproduction does not cause variation
All the daughter cells have the same resistance to diseases.
Explanation:
Use the image of the periodic table to answer the following: Which of the
following shows the correct Lewis structure for the element
Answer:
Wish I could be of help but I like your peppa pig sticker :)
Answer:
its b and the next one is c
Explanation:
which of the following adaptations is most closely related to what the animal eats
a. a poison frogs bright colored
b. the venomous bite of a slow loris
c. a house cats fur
d. a strong jaw bone of a giant panda
Answer:
D
Explanation:
its so true tho XXXXXDDDDD
Answer:
Bruh ong lol
Explanation:
Answer:
hahahah lol
Explanation: