Which of these is a form of chemical weathering?
A. Oxidation
B. Exfoliation
C. Abrasion
D. Thermal expansion

Answers

Answer 1

Answer:

A. Oxidation

Explanation:


Related Questions

Which nutrients do plants need in larger quantities?
micronutrients
or
macronutrients

Answers

Answer:

macronutrients

Explanation:

macronutrients are important for growing plants. the main macronutrients are nitrogen, Potassium, and phosphorus.

Answer:

The second answer.

Explanation:

9. If the Earth and the Moon were on the same orbital plane, how often would a lunar eclipse
occur?
A. Once a month at the First Quarter phase.
B. Once a month at the full Moon phase.
C. Once a month at the New Moon phase.
D. Once a month at the Third Quarter phase.

Answers

Answer:

.B

Explanation:

once at the full moon phase

Design an experiment to test the role of thyroxine in helping the body adjust to cold temperatures. Describe the overall investigation to be done, the variables to be changed, the variables to be kept constant, the subjects to be used, the control and experimental conditions to be used, the type of data collected, and how the data will be collected. Explain how these data can be used to justify the conclusion that thyroxine is involved in adjusting body temperature in response to cold. (9 points)

Answers

Answer:

- Hypothesis: thyroxine gene is responsive to low temperatures, thereby its transcript level is higher in cold climates

- Subjects of study: gene expression data collected from individuals from countries with different climates  

- Experiment: to determine thyroxin gene expression level by Real-Time PCR (RT-PCR) in individuals living in cold climates (e.g., Iceland) versus individuals living in warmer climates (e.g., Puerto Rico)

- Independent variable: temperature

- Dependent variable: thyroxin transcript level  

- N sample: 500 individuals of each population  

- Control group: individuals living in the same climate conditions but from different countries. It can be done by collecting gene expression data from individuals living in another country. For example, both Fairbanks (Alaska) in the USA and Reykjavik in Iceland are at 64 degrees N latitude, and thereby these cities have similar climates

- Constant variable: all data collected from individuals of adult age (age range: 20-30 years)  

Explanation:

The scientific method is a sequential process that consists of making hypotheses in order to explain observations from the real world, make predictions based on the working hypotheses, carrying out experiments based on those predictions, test the predictions and draw conclusions based on the results obtained. In an experiment, the independent variable isn't changed by the other variables, while the dependent variable is the variable being measured in the experiment. A constant variable does not change during the experiment. Moreover, a control group is a particular group to which comparisons are made during the experiment (the control group isn't exposed to the independent variable, and therefore any change in the experimental groups can be compared with the control). In this case, it is expected to measure thyroxine expression levels in 500 individuals from each country by RT-PCR (RT-PCR technique is used to measure the amount of mRNA of a target gene of interest). Subsequently, it is possible to determine if the differences in the thyroxin gene expression levels between populations (i.e., individuals living in Iceland vs individuals living in Puerto Rico) are statistically significant to confirm that thyroxin gene activity is increased in response to cold exposure. Finally, the control group can be used to determine if observed differences in gene expression are irrefutably correlated with cold conditions.

what is angiosperm in plant

Answers

Answer: a plant that has flowers and produces seeds enclosed within a carpel. The angiosperms are a large group and include herbaceous plants, shrubs, grasses, and most trees.

Explanation:

Please help I’ll mark you as brainliest if correct! #2

Answers

Answer:

Tt

Explanation:

Hello. I believe that you are only referring to question 2, since question 3 does not present all the answer options. As such, the offspring of a cross between a tall pea plant (TT) and a low pea plant (tt) would be completely "Tt."

To achieve this result, you must make a Punnett Square, which is a frame that allows you to combine the alleles of the parents in a cross to project the alleles of the offspring.

Alleles are those characterized by the letters associated with characteristics. As you saw in the question above, tall pea plants have "TT" alleles that are dominant alleles, while low pea plants have "tt" alleles that are recessive alleles. In this case, to use Punnett Square, you must put the alleles of one parent in the first row and the allele of the other parent in the first column. Then just combine each allele, as shown below:

    T    T

t    Tt   Tt

t    Tt   Tt

As you can see all the offspring will have the "Tt" alleles. This means that the entire offspring will be tall pea plants. This is because the recessive allele "t", which is related to pea plants, can only be expressed in the presence of another recessive allele. However, the dominant "T" allele, which is associated with tall pea plants, can be expressed in any situation.

Give three examples of what happens with unbalanced forces? I give Brainly

Answers

Kicking a soccer ball.
The up and down movement in a seesaw.
The taking-off of a Rocket.
Skiing along the mountain slopes.
Hitting a baseball.
A turning vehicle.
Drowning of an object.
Apple falling on the ground.

All of these are unbalanced

An unbalanced force happens When two forces acting on an object are not equal in size, we say that they are unbalanced forces. ... a stationary object starts to move in the direction of the resultant force. a moving object changes speed and/or direction in the direction of the resultant force.

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Answers

Answer:

small fishes--tuna fish--dead animal material---crabs

Explanation:

follow the arrows from small fishes to crabs

Answer:

Answer is below

Explanation:

Small fish ---> Tuna Fish ---> Dead Animal Material ---> Crabs

This shows the path specifically followed from the small fish to the crabs

Please and thank you!

Answers

Answer:

A gene mutation

Explanation:

DNA nucleotide sequence is unique

What hormones stimulate the cycle of egg or sperm production?

Answers

Answer: The main reproductive hormones are estrogen and testosterone. Once a girl enters puberty, estrogen matures the eggs in the ovaries. These are then released at regular intervals during the menstrual cycle. Testosterone stimulates the production of sperm in men.

Explanation:

For a typical human aorta, the diameter of the lumen is 30 mm and the thickness of the wall is 4 mm. Assuming a blood density of 1.06 gm/cc and a viscosity of 0.035 Poise, calculate the Womersley number if the heart rate is 70 bpm. Diameters for the carotid and femoral arteries of a typical human are about 0.8 cm and 0.5 cm, respectively. Compute the Womersley numbers for each of the arterial segments for the same heart rate and explain if the flows can be assumed steady or not.

Answers

Answer:

Womersley numbers :  22.25 , 5.96 , 3.72

Explanation:

Calculate the Womersley number if the heart rate = 70 bpm

For the Human Aorta

∝ = r [tex]\sqrt{\frac{wp}{u} }[/tex]  ------ ( 1 )

r = radius  = 15 mm = 0.015 m

w = 2πf = 2 * π * 70 = 439.82

p = density of blood = 1060 kg/m^3

u = 0.035 P = 3.5 cp = 3.5 * 10^-3 Ns/m^2

Back to equation ( 1 )

∝ = 0.015 * [tex]\sqrt{\frac{439.82*1060}{60*3.5*10^{-3} } }[/tex] = ( 0.015 * √466209.2 / 0.21 )  = 22.35

 For Carotid artery

r = 0.8 cm / 2 = 0.4 cm = 0.004 m

w = 2πf  = 439.82

Womersley number =  ( 0.004 * √466209.2 / 0.21  )

                                = 0.004 * 1489.981 = 5.96

For Femoral artery

r = 0.5 cm / 2 = 0.25 cm = 0.0025 m

Womersley number = 0.0025 * √466209.2 / 0.21  )

                                = 0.0025 * 1489.981 = 3.72

The flow is unsteady because of the varying Womersley numbers

You burn a log on a fire. You use the fire to warm yourself and to light up the
room to read a book. Which energy transformation is taking place?

A. Chemical energy is transformed to nuclear energy and thermal
energy
B. Chemical energy is transformed to light energy and thermal
energy
C. Thermal energy is transformed to light energy and chemical
energy
D. Nuclear energy is transformed to potential energy and thermal
energy.

Answers

Answer:

b) is the the answer

Explanation:

hope it helps

Prisms produce the colors of the rainbow through?

A. Reflection.

B. Refraction.

C. Scattering.

D. Absorption.

Answers

Answer:

It should be B

Explanation:

I hope this helps

I really need help please somebody...

Answers

i think 75% due to some may have no horns bc its non dom

Answer:

first choice: 25%

Explanation:

when crossing Aa x aa, there is a 25% chance that the outcome will be Aa, giving the resulting cattle offspring horns. Hope this helps!

I’m struggling with this practice problem help

Answers

Answer:

it think it C ^^^^^^^^^^^^

Phenylketonuria causes a severe cognitive disability due to the inability to metabolize phenylalanine. It is an autosomal recessive disorder. About one in 12,000 newborns in Massachusetts are afflicted with the disease, skewed higher than the general US population due to more Irish-Americans. Assuming the gene is in Hardy-Weinberg equilibrium, the frequency of the carriers (heterozygotes) in Massachusetts would be calculated to be...

Answers

Answer:

The frequency of the carriers (heterozygotes) in Massachusetts is 0.018

Explanation:

Due to technical problems, you will find the complete explanation in the attached files

Which list shows the steps by which surface water can become groundwater?
A. Zone of saturation → zone of aeration → precipitation
B. Precipitation → zone of aeration → zone of saturation
C. Zone of aeration → zone of saturation → precipitation
D. Zone of saturation → precipitation → zone of aeration

Answers

The steps by which surface water can become groundwater

B. Precipitation zone of aerationzone of saturation.

What is Groundwater?

Groundwater is the reservoir of water this water accumulates in the ground surface or subsurface of the earth's crust through tiny pores and fractures in the rocks.

The source of water are streams of rivers, oceans, lakes and large depositing is because of water from the rain and melting of the snow. It is a source of freshwater in nature.

Thus, option "B" is correct.

To learn more about groundwater click here:

https://brainly.com/question/12136682

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how can a brick wall model as a group of plant cells

Answers

Answer:Like a brick wall, your body is composed of basic building blocks, and the building blocks of your body are cells.For example, epithelial cells protect the outside surface of the body as part of the skin and cover the organs and body cavities within. Bone cells build up bones to provide support for the body.

Explanation:

wrote an essay on it

"Whenever two objects come into contact, there is always a transfer of material demonstrates which
principle?
a. Daubert principle
b. Frey principle
Locard's principle
d. Holmes principle
c.

Answers

Answer: It is the Locard's principle.

:)

Can you guys help me

Answers

survival of the fittest

Please hurry I need the right answer and I will give brainliest for the right answer no alien talk or file

Answers

Answer:

grasshopper

The organisms that eat the producers are the primary consumers. ... The primary consumers are herbivores (vegetarians

The organisms that eat the producers are called primary consumers

which two processes indicate that water is gaining thermal energy

A. evaporating
B. condensing
C. freezing
D. boiling

Answers

Answer:

A. evaporating, D. boiling

Explanation:

Condensation, deposition, and freezing are processes that occur as a result of a decrease in the heat energy of water particles.

I’m pretty sure it is (condensation) and (freezing) I had this class a while back but those two stand out

Protists are
A. the simplest of eukaryotes
B. members of a single kingdom
C. the simplest of eukaryotes, and are generally aquatic
D. the simplest of eukaryotes, generally aquatic, and members of a single kingdom
E. generally aquatic

Answers

Answer:

D

Explanation:

that is the answer 101010101010101001

Individuals in a population of purple people earters are polymorphic at a single locus that leads to variation in purple people eater pup viability. 45% of the pups with genotype PP are viable, 54% of pups with genotype Pp are viable, but only 4% of pups with genotype pp are viable. What model of natural selection best fits these data

Answers

Answer:

The correct answer is - overdominance.

Explanation:

In the given question, genotype Pp is a heterozygote condition that has a 54% survival rate or fitness thus these individual people get more chance of mating and increase in number as compared to the other two conditions of PP or pp traits where PP has 45% survivability, less than heterozygous condition and more than pp that has only 4% rate.

It results in a normalizing selection model of natural selection as a moderate trait, that is heterozygote, is selected. Thus, the selection of overdominance which means heterozygote condition produces a better phenotype than PP or pp parents is heterosis.

I need help plz help me

Answers

Answer:

T and A are together

G and C are together

Explanation:

these pairs will always connect to each other

Plants have structures which affect reproduction rates in plants.
A. True
B. False

Answers

Answer:

i think it is false

Explanation:

i could be wrong

The original source of new alleles, upon which selection operates, is mutation, a random event that occurs without regard to selectional value in the organism. Although many model organisms have been used to study mutational events in populations, some investigators have developed abiotic molecular models. Soll et al. (2006. Genetics 175: 267-275) examined one such model to study the relationship between both deleterious and advantageous mutations and population size in a ligase molecule composed of RNA (a ribozyme). Soll found that the smaller the population of molecules, the more likely it was that not only deleterious mutations but also advantageous mutations would disappear. Why would population size influence the survival of both types of mutations (deleterious and advantageous) in populations

Answers

Answer:

Sampling error may allow fixation of one form and the elimination of others in a small population.

Explanation:

It can be seen that in case of a small population size, there are high chances of the elimination or the fixation of the allele in the population when compared to the large population size. Also sampling errors are found in case of small population size that leads to the enhancement of the chances for fixation and also for the elimination of the allele. This large size population doe not have much effect. The random fixation of the either selective allele or the elimination of the disadvantageous allele occurs due to the genetic drift.

SO in order for the population size influenced the survival of both types of mutations , the sampling error may be allowed for the fixation of one of the form and the elimination of the other forms in the small population size.

Why is global warning considered a controversial issue?

Answers

answer: The global warming controversy concerns the public debate over whether global warming is occurring, how much has occurred in modern times, what has caused it, what its effects will be, whether any action can or should be taken to curb it, and if so what that action should be. In the scientific literature, there is a strong consensus that global surface temperatures have increased in recent decades and that the trend is caused by human-induced emissions of greenhouse gases.[1][2][3][4][5][6] No scientific body of national or international standing disagrees with this view,[7] though a few organizations with members in extractive industries hold non-committal positions,[8] and some have attempted to convince the public that climate change is not happening, or if the climate is changing it is not because of human influence,[9] attempting to sow doubt in the scientific consensus.

Imagine two populations of penguins live in the same ecosystem. One population begins to exchange stones as a mating ritual while the other population begins to dance by shifting from one foot to the other. Individuals from each population will only mate with individuals that display the appropriate mating ritual. Which type of reproductive isolation mechanism does this scenario describe?(1 point)

Behavioral Isolation

Geographic Isolation

Temporal Isolation

Habitat Isolation

Answers

Answer:

i think its behavioral

Explanation:

Answer:

The answer would be Behavioral Isolation.

Explanation:

I did the Connections Academy Quick Check and it said it was correct.

Soooo... anyone have an essay on the impact of climate change on the oceans they’d like to share?? :)
I need ideas!!!

Answers

Answer:

Here's a paragraph that you can add !

Explanation:

When greenhouse gases capture more solar radiation, the oceans consume more heat, resulting in higher sea surface temperatures and increasing sea level. Changes in water temperatures and tides caused by climate change will cause changes in global climate patterns.

To become or stay physically fit, you should exercise and eat healthy.
O A. True
B. False

Answers

The anwers will be A true
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