A change in which of the following is least likely to impact primary productivity?

A. Nitrate
B. Dissolved oxygen levels
C. Dissolved carbon dioxide levels
D. Phosphate

Answers

Answer 1
The correct answer is D
Answer 2

Answer:

its C just did the test pennfoster :)


Related Questions

HELP PLEASE I REALLY NEED HLP A water feature that could be a source of groundwater for humans is found at a location on a hillside where Earth’s surface is lower than the water table

What type of feature might be observed at this location?

a spring
b aquifer
c artesian well
d unsaturated zone

Answers

Answer: c

Explanation:

Answer:

c

Explanation:

Which of the following remains would be most likely only be found as a compression fossil?

a shell

a leaf

a mammoth

a dinosaur

Answers

Answer:

A leaf

Explanation:

A leaf bwcause it is a plant

Does each codon code for three amino acids?
A. YES
B. NO

Answers

Answer:

yes

Explanation:

i hated every minute of my science but i still know what it is lol, have a good day! and if u can give me brainliest bcuz i need 50 for my next rank'

Which method of determining salinity is least likely to be used by current oceanographers?

A. Determining salinity based on measurements of the chloride ion
B. Determining salinity based on refraction of light
C. Determining salinity based on satellite observations
D. Determining salinity based on electrical conductivity of seawater using a CTD

Answers

Answer:

D

tell me if I am wrong please

Answer:

Refraction OF LIGHT

Explanation:

Salinity can be measured in various ways. Most oceanographers

measure salinity with an instrument called a CTD, named for the three

parameters it measures: conductivity, temperature, and density. To

determine salinity, probes on the CTD record electrical conductivity.

SOURCE OF ANSWER:

Desktop CTD instruments are also available, but when the

highest precision isn't necessary for lab settings, a much simpler tool

called a refractometer is used.

A refractometer measures salinity based on refraction. Refraction is the

bending of light that occurs within a water sample. Only a few drops of

water are placed under the light source of the handheld refractometer.

What is the atomic mass (mass number) of this atom?
a
b,c
09
04
08
O1
O

Answers

Answer: 09.=y 1000z%

Explanation:

What is recessive for orange hair color.
For tigers.

Answers

Answer: The golden colour is another autosomal recessive trait, this one known as wideband, WB, referring to a wider central part of the hair shaft. ... 90% of the tiger's coat comprises these agouti hairs. On orange tigers, the agouti hairs have dark tips and bases and bands of phaeomelanin (red pigment) in between.

Plz mark me brainliest if i am right... stay safe and have a great weekend!!! :D

Help please ASAP !!

How do scientists know that Earth is currently in the middle of an ice age or interglacial period?

Select one

A. Due to climate change , and snow are rapidly melting .

B. Carbon dioxide levels are decreasing , which is causing Earth's temperature to become cooler

Answers

A. The argument recently in science has been the rising levels of carbon dioxide which is major component of climate change

Which of the following is the best choice to demonstrate the levels of orgaization in plants? PLEASE HURRY ILL REWARD YOU!!!!!

A. leaf-> tree-> xylem-> plant cell-> shoot system
B. tree->leaf ->plant cell ->xylem -> shoot system
C. plant cell-> xylem -> leaf-> shoot system -> tree
D. shoot system->xylem -> leaf-> plant cell-> tree

Answers

Answer:

B

Explanation:

Answer:

B. tree->leaf ->plant cell ->xylem -> shoot system

Explanation:

What is the term used to describe adding this functional group to our DNA?

Answers

Answer:Some of the key types of functional groups found in biological molecules. ... strongly hydrophilic group is the carboxyl group (COOH), which can act as an acid and ... The letter R is used throughout biology and chemistry to simplify chemical ... but that may not be a good term to use) and is commonly seen for elements

Explanation:

3. In Lab, Section II, Exercise 3 if dad and mom (first generation) have two children (second generation), how many descendants will there be in the following six generations if each child has the same number of children as their parents (22)? Complete the table below, then construct a line graph. Sign, date and prepare an image of your graph and include it with this lab report.

Answers

Answer:

Be happy

Explanation:

Its okay to fail

One challenge to understanding Earth's geologic history is

Most ancient ocean plates have been destroyed by subduction

Plate tectonics causes uplifting

Continents collide and destroy fossil evidence

There are few continental plates older than 200 million years old

Answers

Answer:

Continents collide and destroy fossil evidence

Explanation:

One main challenge in understanding earth's geologic history is that continents collide and destroy fossil evidence.

Fossils are the preserved remains of dead organisms found in rocks. They are very good and useful indicators of the life of an organism. By studying the progression of their evolution, a vivid understanding of the earth's geologic history can be constructed.

What is the purpose of this process???

Answers

G 1356900986431245780
it is G..............

Consider the separate stages of an animal virus life cycle. Assemble a list of structures and processes that are unique to the virus and would make good drug targets for an antiviral agent. Explain your rationale for each choice.

Answers

Answer:

Explanation:

In order to make an antiviral agent, we need to find good drug targets, that is, to find structures and processes that are only present in the virus, so there is no harm on human cells when this antiviral agent is being applied.

In the virion of a naked virus, only nucleic acid and  protein are present forming the nucleocapsid. The nucleic acid and proteins of the capsid, specially, are found only in the virus and therefore make good drug targets. For example, we can express antibodies to recognize the proteins of the capsid and guide the immune system to destroy them.

Although virus particles are  metabolically inert, one or more key enzymes are present  within the virion in some viruses, for example, the reverse transcriptase. This enzyme is only found in viruses and if we find a way to inhibit the activity of this reverse transcriptase, like for example finding a competitor substrate, the virus will not be able to synthesize the DNA needed for its replication.

Regarding processes in the virus life cycle, they all have similar steps: first the attachment of the viral particle onto the cell, then the penetration of the virus, then the synthesis of early and intermediate enzymes using the host cell machinery, and finally the assembly of these viral components and lysis of the host cell to release new viral particles.

The attachment of a virion to a host cell is a highly  specific process. Recognition proteins on the virus recognize  specific receptors on the host cell. Substances that compete with the virion for these specific receptors can be used. If there is no attachment, there is no infection.

What similarities and differences do DNA and RNA share in terms of function and structure? Explain!

Answers

Answer: Both DNA and RNA have four nitrogenous bases each—three of which they share (Cytosine, Adenine, and Guanine) and one that differs between the two (RNA has Uracil while DNA has Thymine).

Explanation:

Which statement explains something that the fossil record indicates?

Answers

Mass extinction would be the answer

Answer:

Mass extinction have occurred on Earth several times.

Explanation:

I took the test.

Using your own words, describe lapse rate.

Answers

Answer:

A lapse rate is a rate during which the temperature changes with the peak within the atmosphere.

Explanation:

sorry it took me so long :(

Answer:

The Lapse Rate is the rate that temperature changes with height in the Atmosphere. Lapse rate nomenclature is contrarily connected to the modifying itself. If the lapse rate is positive, the temperature becomes less with height; interchangeably if negative, the temperature becomes more with height.

Explanation:

What strategy/structure prevents Na /Glucose symporters from laterally diffusing from the apical side to the lateral or basal sides of the cell?

a. Tight junctions form a ring of protein around the cell which connects to neighboring cells. This forms a physical barrier restricting lateral diffusion within the membrane.
b. The Na+/Glucose symporters are anchored to the apical side, where they are originally delivered through vesicular trafficking, through protein-protein interactions with the cytoskeleton.
c. Extracellular matrix proteins unique to the intestinal lumen side interact with extracellular side of the Na+/Glucose symporters.
d. None of these

Answers

Answer:

a. Tight junctions form a ring of protein around the cell which connects to neighboring cells. This forms a physical barrier restricting lateral diffusion within the membrane.

Explanation:

Epithelial cells in the small intestine act absorbing nutrients from the digestive tract. The cell membranes in these cells are divided into two domains: the apical domain specialized in nutrient absorption, and the basolateral domain, which transfers the absorbed nutrients to the blood vessels.

In order to maintain these functions differentiated, the mobility of proteins must be restricted to the pertinent domains. One of the mechanisms to achieve this is the formation of tight junctions between the adjacent cells of the epithelium. This acts as a barrier to the movement of lipids and membrane proteins. As a result, proteins can diffuse within their domains but can not cross from one domain to the other.

These tight junctions are formed by interactions between strands of transmembrane proteins, and generally, associate with adherent unions and desmosomes forming an union complex.

What are the function of chloragogen
Cell in earthworm

Answers

Explanation:

The cells store glycogen and neutralize toxins and are present in coelomic fluid of some annelids. They are yellowish in colour due to the presence of yellow granules called chloragosomes.

These cells are derived from the inner coelomic epithelium, and help in excretory functions, as most commonly demonstrated in earthworms.

Does the absence of one organism or two in the food chain change or affect the producer or consumer relationship?

Answers

Answer:

yes

Explanation:

{20 points} {brainliest} pls help <3

Many people don't get enough vitamin D and calcium, which can cause bones to be fragile. The lack of vitamin D and calcium is an example of a

A. hereditary disease.
B. genetic disease.
C. toxicity.
D. deficiency.

Answers

The answer is B hope this helps

Answer:

deficiency

Explanation:

PENN

For the cross bbEe x BbEe, choose all possible gametes produced by BbEe parent

Answers

It would be -be and -bE

why does individual commit crime?​

Answers

People commit crimes for many different reasons. whether it is for the excitment and thrill of it or whether they were forced to or peer preasured on by another person. Maybe they robbed a bank cause they needed money or they were under the influence of drugs or alchohol

The causes of crime are complex. Poverty, parental neglect, low self-esteem, alcohol and drug abuse can be connected to why people break the law. Some are at greater risk of becoming offenders because of the circumstances into which they are born.

Why was it important to drop the ball from the same height three times? Why were the numbers
slightly different?

Answers

Answer:

It is important to do this to test your theory multiple times, so that you can see what effect the drop has on it when doing this multiple times. The numbers were slightly different because the recordings will not always be the same.

Explanation:

turn TACCATCGATTGGAA to a RNA sequel ​

Answers

Ok mauguguv is there a lot more and more than a few minutes later I can have

The RNA sequence is:

AUG GUA GCU AAC CUU

Which ingredient is a product of photosynthesis? Sugar, sunlight, carbon dioxide, or water?

Answers

Answer:

sugar

Explanation:

plant converts ATP to sugar

Consider what would happen to a diploid plant when genes are destroyed by a mutation.
How many genes would have to be destroyed in a diploid plant for one trait to be lost?

Answers

Answer:

Two, usually

Explanation:

A diploid plant has two copies (alleles) of every gene. If one copy of the gene is destroyed by a mutation, the plant will likely be okay with its other copy, and the trait will still be expressed.

However, some traits require both copies of the gene to be expressed. For example, if one gene is destroyed that means only half the amount of the gene product is produced. If that is not enough protein for the trait to be expressed, then the trait will be lost.

What’s the answer ? Pls

Answers

Answer:

B. ATP has one more phosphate group than ADP

Explanation:

ATP has 3 ADP has 2

Please let me know if this is correct

Answer:

B) ATP has one more phosphate group than ADP

Explanation:

:)

what is biology definition?

Answers

Answer:

the study of all living things

Explanation:

Damage to the highlighted region of the spinal cord results in ________ of the skeletal muscles served by that particular region.

Answers

Answer:

Non-functioning

Explanation:

Non-functioning of skeletal muscles occurs when the spinal cord region is damaged because spinal cord is responsible for sending information in the form of signals. The spinal cord has a network of fiber started from the brain and distributed to all the body is known as neurons. These neurons are responsible for sending instructions to the muscles from brain. If they are damaged, the body parts unable to move and can't perform their particular function.

How do meteorologists indicate different types of weather fronts on a weather map?

Answers

Answer:

A stationary front is depicted by an alternating red and blue line with a triangle on the blue portion and half-moon on the opposite side of the red portion of the line. A cold front (or warm front) that stops moving becomes a stationary front.

Explanation:

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Here we are againJust me and you comedian, right?With your blastersYour flashing eyeYou should be prepared because soon...Your last hour strikesOne step left nowIt's almost timeShow you what my DETERMINATIONHas still left for you to get back toYou should prepare to just dieLike all your friends you'll have a really good timeBut guys like you are always just foolsCome at meTry to kill me with your fancy tools"Let's goNow the room gets chiller"Let's goJust another killerGo aheadKill me againI see you're ableBut inside you know the end can't be evadedI can tell you're really tired out of fightingBut I'll even come back after dyingWhy not let me win?You can't dodge forever!Even if the pain is more fun togetherYou know I will just RESET and come back newerAnd with every try I'm getting even faster than you areI am made ofLo-o-o-o-ooove, lo-o-o-o-oove, lo-o-o-o-oooveLo-o-o-o-ooove, lo-o-o-o-oove, lo-o-o-o-ooove"This is where it stops""This is where is ends"You keep telling me those wordsAnd hope I would understandBut even it I hear youI won't give up my attackCan you not see the truthOr can you not see what this all meant?Go aheadKill me againI see you're ableBut inside you know the end can't be evadedYou think I might decide to stop if you stay patientBut I am getting you with my DETERMINATIONYou know I made your friends all disappearERASING all what's leftThis is why I'm hereI will keep FIGHTINGYou should be DYINGThat is your DESTINATIONI'm entirely made ofLo-o-o-o-ooove, lo-o-o-o-oove, lo-o-o-o-oooveAnd I'm sure I'm stronger than youLo-o-o-o-ooove, lo-o-o-o-oove, lo-o-o-o-oooveI am stronger than youLo-o-o-o-ooove, lo-o-o-o-oove, lo-o-o-o-oooveLo-o-o-o-ooove, lo-o-o-o-oove, lo-o-o-o-ooovewhat is this song Nose color is an inherited trait in dogs. Two puppies from the same set of parents have different color noses. One puppy has a pink nose and one puppy has a black nose. How can puppies from the same set of parents have different color noses? A. The pink-nosed puppy and the black nosed puppy must not actually be related. B. The pink-nosed puppy and the black nosed puppy inherited different combinations of the genes for nose color from their parents. C. The pink-nosed puppy has a different number of chromosomes than the black nosed puppy. D. The pink nosed puppy and the black nosed puppy have different chromosomes for the two nose colors. durning the American revolution the _____new states agreed A collector has 105 movie posters and 90 band posters. She wants to sell 28 movie posters but still have her poster collection maintain the same ratio of 105:90. If she sells 28 movie posters, how many band posters should she sell? Complete the explanation to find out how many band posters she should sell. hich phrase describes foliated rocks?tend to break in halfgrains arranged randomlytend to split apart along bandsgrains arranged in increasing size