Soil organisms, such as mycorrhizal fungi, impact the rate of succession in ecosystems. Mycorrhizal fungi have a mutualistic relationship with various species of plants and increase the plant growth and survival. Sand dunes often lack mycorrhizal fungi, and a researcher wanted to determine the effect of adding mycorrhizal species to sand on disturbed beaches on grass growth. The researcher set up various mycorrhizal communities at disturbed beaches in different locations on the east coast of the United States. Identify the independent variable in the study.

Answers

Answer 1

Answer:

The amount (number) of mycorrhizal fungi

Explanation:

In a scientific experiment/study, the independent variable is the variable that isn't changed by other variables, while the dependent variable is the variable that is being measured during the experimental procedure. The independent variable is manipulated by the researcher (in this case, the amount of mycorrhizal fungi), thereby affecting the dependent variable (in this case, grass growth). In consequence, a variable is dependent because it 'depends' on the independent variable.


Related Questions

bicycle tyres become flat when the weather is cold.Why?​

Answers

Answer:

The tires lose air pressure in the winter because it contracts. If you have 35 lbs in the summer, with 85 degrees, when it gets cold, down to -10, your air pressure can get down to about 25 lbs. So before it gets bitter cold, inflate your tires up a little. You don’t want to be putting air in your tires once it is freezing out. Sometimes the schrader valve doesn’t seat properly because of frost and the rubber seal is hard. I have had several tires go flat on me because of this.

Explanation:

I have the biology STAAR test tomorrow what facts and tips would help me pass it please help

Answers

Answer:

eat breakfast+stay posative+read a book 20min before bed+and study things that you things will help you get ready

Explanation: YOU GOT THIS!!!!

In the pictures above, someone is holding ice cubes; it feels cold and they begin to
melt. Which of the following describes what is occurring?

Answers

Answer:

As shown in the pictures above, the ice is absorbing heat energy from the hand and the surroundings, which results in the melting of the ice- a process of change of state from solid to liquid. The hand feels cold .

Note: The question is incomplete as it is lacking some details.

Explanation:

Melting is a change of state process which involves the change from solid to the liquid state. Solids when they absorb heat, change to liquids at a temperature known as the melting point. This change of state occurs because the molecule of the substance acquires enough energy which to be able to overcome the intermolecular forces holding the ice crystals together, as a result, the molecules begin to melt.

In the picture,the melting of the ice held by the hand is because the ice absorbs heat from the hand as well as from the surroundings . As a result of this loss of heat from the hand, the hand feels cold after. The process of this heat transfer is by conduction whereby heat is conducted away from the hand in order to melt the ice which is contact with the hand.

In feedback inhibition, does an enzyme’s substrate attaches to an allosteric site?

Answers

Answer:

They bind to an allosteric site which induces a conformational change that increases the affinity of the enzyme's active site for its substrate. This increases the reaction rate.

energy
Using the Earth's internal heat to generate electricity is called
A. geothermal
B. solar
C. hydroelectric
D. wind
Please select the best answer from the choices provided
А
B
Ο Ο Ο Ο

Answers

Answer:

A

Explanation:

Geothermal power plants, which use heat from deep inside the Earth to generate steam to make electricity.

Answer: it’s A

Explanation:

Explain how the disruption can disturb the cycling of carbon ?

Answers

Answer:

Humans have breached this cycle by digging up fossil fuels and burning them, leading to carbon dioxide building up in the atmosphere faster than natural systems can soak it up. This has led to a net increase in greenhouse gases in the atmosphere, causing the planet to heat up.

Explanation:

According to the cell theory, which describes cells?

Answers

Answer:

They are the building blocks of life.

Explanation:

They are so called the building blocks of life because they make up everything

how do plant tissue systems work together to maintain homeostasis

Answers

They keep the plant cells in place causing the plant to have a stable internal

What is apoptosis? plzzz help

Answers

Answer:

Apoptosis is the process of programmed cell death.

Explanation:

Answer: the death of cells which occurs as a normal and controlled part of an organism's growth or development.
Explanation: I looked it up on safari

What gland is essential to the menstrual and ovarian cycles
a.adrenal
b.thyroid
c.pituitary

Answers

C. Pituitary gland.

The pituitary gland is responsible for the release of follicle-stimulating hormone and leutinizing hormone. Follicle-stimulating is important in the follicular phase of the menstrual cycle, as it stimulates the development of ovarian follicles. Leutinizing hormone is important in the initiation of ovulation and in the stimulation of the corpus luteum to produce progesterone.

Non-living things that affect living things

1 biotic factor

2 niche

3 ecology

4 abiotic factor

Answers

Answer:

3) Ecology

Explanation:

Ask ya teacher:P

The answer should be 3. Ecology

The principle of natural selection states that the best adapted organisms are most likely to survive and reproduce. Was this demonstrated in your experiment? Explain.

Answers

Answer:

Yes

Explanation:

Natural selection was first postulated by Charles Darwin. It is the idea that organisms that are best adapted to their environment are able to survive and reproduce thereby transmitting their favorable characteristics to their offspring.

In our experiment, the insects that were able to survive were allowed to reproduce thereby transmitting their favorable characteristics to their offspring. This is a demonstration of natural selection.

16. In the context of the personality research methods, determining the effect of one or more variables on behaviour....

Answers

Answer:

an experiment

Explanation:

In the personality research methods, an experiment is the method determines the effect of one variable or more variables on the behavior. In personality research methods, we conclude that :

-- it can be stable as well as predictable

-- it is based on the behavior and the personality  traits

-- it is resistant to the sudden changes

The root system of a grass plant interacts with the vascular system to increase the ability of the plant to Group of answer choices

a.absorb carbon dioxide for photosynthesis
b.manufacture pigments for protection
c.obtain nutrient molecules
d.carry on gas exchange and absorb inorganic substances

Answers

I believe the correct answer is c. obtain nutrient molecules

The root system of a grass plant interacts with the vascular system to increase the ability of the plant to obtain nutrient molecules. That is option C.

Importance of the root system

The plant is made up of the root and the shoot systems which continually communicates for the growth and maintenance of the whole plant.

The root system is part of the plant that grows downwards. It has the following functions:

It holds the plant to the soil.

It absorbs water and nutrients from the soil.

It Conducts absorbed water and nutrients to stem

Therefore, the root system of a grass plant interacts with the vascular system to increase the ability of the plant to obtain nutrient molecules.

Learn more about plant root systems here:

https://brainly.com/question/3403854

Vesícula e vacúolo são a mesma coisa ?

Answers

Answer:

Vesículas e vacúolos são sacos ligados à membrana que funcionam no armazenamento e transporte. Os vacúolos são um pouco maiores do que as vesículas, e a membrana de um vacúolo não se funde com as membranas de outros componentes celulares. As vesículas podem se fundir com outras membranas dentro do sistema celular

Answer
i dont speak english

which of the following is true about macromolecules

Answers

Answer:

i think A

Explanation:

A macromolecule is a very large molecule, such as a protein. They are composed of thousands of covalently bonded atoms. Many macromolecules are the polymerization of smaller molecules called monomers.

pa brainlies po pls

The statement that is true as regards macromolecule is Amino acid are bonded together to make a protein.

What are macromolecule?

macromolecule can be regarded as the big molecules which are the composition of smaller molecules.

For instance,  very large molecule, such as a protein or carbohydrates.

Learn more about macromolecule at;

https://brainly.com/question/2595296

What particle travels in electromagnetic electromagnetic wave?
A. Proton
B. electron
C. neutron
D. Photon

Answers

I looked it up and got both A and B I don’t if that helped

as you move upward away from sea level.
In general, atmospheric pressure is greatest near Earth's surface and
decreases
stays the same
b. increases
d. doubles
a.
C.
Please select the best answer from the choices provided
A
B
C
С
D

Answers

Answer:

decreases

Explanation:

Help me right know please! Past due! I will make you brianlest don’t copy and paste from the internet or your reported

hypothesis stated: the density of a liquid affects properties and how it interacts with other liquids.

How does density affect the position of a liquid relative to other liquids?

Answers

Answer:

The density of a liquid is shown by the object sinking or floating. Therfore, using this information if the object sinks then the object is more dense than the object that floats. When it comes to the density of liquids if the liquid sits on top of the water and does not mix, the liquid is less dense than water. If the liquid sinks into the water and the water sits on top, the liquid is more dense than the water.

Explanation:

Where did Watson and Crick do their work on Dna

Answers

Answer:

James Watson and Francis Crick with their DNA model at the Cavendish Laboratories in 1953.

Explanation:

Which of the following pairs shows the correct monomer, macromolecule, function relationships?

Question 1 options:

triglyceride: carbohydrate: information storage


monosaccharide: protein: quick energy


amino acid: lipid: insulation


nucleotide: nucleic acid: genetic information storage

Answers

Answer:

Amino Acid: lipid: Insulation

Explanation:

Monomers are the building blocks of the four basic macromolecules of life- monosaccharides are the monomers of carbohydrates, amino acids are the monomers of proteins, glycerol/fatty acids are the monomers of lipids, and nucleotides are the monomers of DNA.

In a school, small noses (S) are dominant to Big noses (b). List the three possible genotypes and phenotypes in the offspring below.
Genotypes: Phenotypes:

Answers

Answer:

Sb, SS, bb

Small nose, Small nose, big nose

Explanation:

Which nonmetal is used as a food?

O rock gypsum
O rock salt
O quartz
O talc

Answers

Answer:

B. Rock salt

Explanation:

Answer:

B. Rock salt

Explanation:

hi! please help i’ll give brainliest

Answers

Answer:

An Ocean Shore

Explanation:

The wind would erode and deposit sand from dunes, and the water from the waves will erode rocks.

Answer:

the open ocean

Explanation:

The proper order for the classification of organisms is

Answers

Answer:

Domain

Kingdom

Phylum

Class

Order

Family

Genus

Species

An easy way to remember this is Dear King Phillip Came Over For Good Spaghetti.

a taxonomic rank used in the classification of organisms and recognized by the nomenclature codes. The well-known ranks in descending order are: life, domain, kingdom, phylum, class, order, family, genus, and species, with order fitting in between class and family.

Question 4

In this Food Web Pyramid Which type of consumer gets only 10% of the energy stored in plants?
A. Herbivore
B. Carnivore
C. Omnivore
D. Secondary Consume

Answers

Answer:

Herbivore, of course, I'm really sure that we all know exactly what a herbivore is, but as a refresher, a herbivore is like a vegetarian, they have a diet strictly based on plants. Carnivore's eat meat, not vegies, and an omnivore eats both, most humans are labeled as omnivores, except vegetarians. So your answer is Secondary Consume. This is because they only receive 10% in vegies, Primary Consume get 90%, Herbivores are Primary Consume's.


Which statement identifies the body systems that are directly involved in the interaction
described and explains how they accomplish the interaction?

Answers

Answer:

Organ systems of the human body interact to maintain a balanced internal environment,As blood flows

Explanation:

through certain organs of the body, the composition of the blood changes because of interactions with those organs. state one change in the composition of the blood as it flows through the respiratory system.

Answer:

The reproductive system produces the ovum, and the muscular system causes the migration of the ovum by peristaltic contractions.

Explanation:

Give 4 ""combining evidence"" in favor of organic evolution.

Answers

Answer:

1. Fossil record  

2. Comparative anatomy

3. Embryology

4. Biogeography  

Explanation:

Evolution is descent with modification. The organic evolution theory states that present complex life forms have evolved from the earlier (simpler) forms of life over time. Some of the most important pieces of evidence in support of the theory of organic evolution are:  

1. Fossil record: fossils are dead remains of past living organisms preserved in the rocks of the remote past. These fossils demonstrate the existence of past living organisms that are related to present-day organisms.  

2. Comparative anatomy refers to the study of similarities in the anatomy of different species, which provides direct evidence for identifying common ancestry between related species.

3. Embryology: the more recent the ancestor is that two species share, the greatest similarities in embryo structures and the more closely related the species are. In this regard, it is important to highlight that often homologous organs/structures (i.e., organs/structures descended from a common ancestor) can be observed only in embryos.

4. Biogeography refers to the spatial distribution of organisms and species. Species distribution reflects the evolutionary process when it is combined with geological change. For example, taxa that had already appeared before ​the separation of the continents are often distributed worldwide.

plz help i need this asap!!! Which characteristics do all bony and jawless fish have in common? Check all that apply.

backbone
swim bladder
scales
gills
bony skeleton

Answers

Answer:

Gills, Scales, swim bladder, and backbone.

Suggested evidence of natural selection at work in humans is the observation of Select one: a. low hemoglobin levels despite high elevation in Tibetan populations over generations b. increase in hemoglobin level when the average person travels from low to high elevation c. an increase in body fat in preparation for winter months at high elevation d. increase in muscle mass from extensive weight training over several months e. mountaineers using oxygen tanks when climbing at high altitude

Answers

Answer:

a. low hemoglobin levels despite high elevation in Tibetan populations over generations.

Explanation:

Natural selection can be defined as a biological process in which species of living organisms having certain traits that enable them to adapt to environmental factors such as predators, competition for food, climate change, sex mates, etc., tend to survive and reproduce, as well as passing on their genes to subsequent generations.

Simply stated, natural selection entails the survival of the fittest. Therefore, the species that are able to adapt to the environment will increase in number while the ones who can't adapt will die and go into extinction.

A suggested evidence of natural selection at work in humans is the observation of low hemoglobin levels despite high elevation in Tibetan populations over generations. This is as a result of a low level of oxygen in the blood of a living organism such as humans.

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