What percentage of bacteria are nonpathogenic?

Answer:

Crust

Explanation:

Crust has the most interaction with the other spheres of Earth.

Answer:

1. It's because when they talk to girls (Not all), they fill their head with all sorts of doubts and worries and then feels nervous as a result.. like for example they could be thinking "Am I making the right impression? Am I too annoying? What does she think of me?"

2. It means that they think that person is pretty. But if it gets too weird or annoying, you should report/tell an adult about it right away.

Explanation:

Organisms (within populations) exhibit individual variation in appearance and behavior. These variations may involve body size, hair color, facial markings, voice properties, or number of offspring.

Answer:

It will maybe be B or CCuase ik it's not A or D

Answer:

The answer is A

Explanation:

It is now possible to take a combination of HIV-fighting drugs, also called antiretroviral therapy, that prevents AIDS from developing when the virus is in the body.

if you mean where it leads to I say HIV  leads to AIDS or in other words...progress has been made towards the goal of ending the HIV/AIDS epidemic due to advancements in both prevention and treatment.

hope this helps!

Answer:

Identical

Explanation:

Binary fission is a form of asexual reproduction. This is when only one parent is involved in creating offspring. Since there is only one parent, two sets of DNA cannot be combined into a new offspring; so, it must be identical.

Answer:

more distant galaxies are moving away faster.

the shift towards red (Doppler effect like with sound on Earth) is the indication.

Explanation:

what did this have to do with biology ?

and by the way, this is also something I debate severely in scientific communities, because yes, the red shift is there. but "more distant" also means "more in the past", so that the data shows us actually that things in the past moved faster away. not necessarily today ...

Explanation:

sana po nakatulong sainyo thanks❤

Cells are the basis of the survival of human beings. We, the living organisms are made up of cells. If cells won’t divide no new organisms would originate.

Cell division is the process by which a parent cell divides, when a mother cell divides into two or more daughter cells. Cell division usually occurs as part of a larger cell cycle. Mitosis is a process of nuclear division in eukaryotic cells that occurs when a parent cell divides to produce two identical daughter cells. During cell division, mitosis refers specifically to the separation of the duplicated genetic material carried in the nucleus.

The existing cells will die and no new cells will be produced as there is no cell division.

For more information regarding cell division, visit:

https://brainly.com/question/796780

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Explanation:

Nitrogen is essential to life because it is a key component of proteins and nucleic acids. Nitrogen occurs in many forms and is continuously cycled among these forms by a variety of bacteria. Although nitrogen is abundant in the atmosphere as diatomic nitrogen gas (N2), it is extremely stable, and conversion to other forms requires a great deal of energy. Historically, the biologically available forms NO3- and NH3 have often been limited; however, current anthropogenic processes, such as fertilizer production, have greatly increased the availability of nitrogen to living organisms. The cycling of nitrogen among its many forms is a complex process that involves numerous types of bacteria and environmental conditions.

In general, the nitrogen cycle has five steps:

Nitrogen fixation (N2 to NH3/ NH4+ or NO3-)

Nitrification (NH3 to NO3-)

Assimilation (Incorporation of NH3 and NO3- into biological tissues)

Ammonification (organic nitrogen compounds to NH3)

Denitrification(NO3- to N2)

Nitrogen Fixation

Nitrogen fixation is the process by which gaseous nitrogen (N2) is converted to ammonia (NH3 or NH4+) via biological fixation or nitrate (NO3-) through high-energy physical processes. N2 is extremely stable and a great deal of energy is required to break the bonds that join the two N atoms. N2 can be converted directly into NO3- through processes that exert a tremendous amount of heat, pressure, and energy. Such processes include combustion, volcanic action, lightning discharges, and industrial means. However, a greater amount of biologically available nitrogen is naturally generated via the biological conversion of N2 to NH3/ NH4+. A small group of bacteria and cyanobacteria are capable using the enzyme nitrogenase to break the bonds among the molecular nitrogen and combine it with hydrogen.

Nitrogenase only functions in the absence of oxygen. The exclusion of oxygen is accomplished by many means. Some bacteria live beneath layers of oxygen-excluding slime on the roots of certain plants. The most important soil dwelling bacteria, Rhizobium, live in oxygen-free zones in nodules on the roots of legumes and some other woody plants. Aquatic filamentous cyanobacteria utilize oxygen-excluding cells called heterocysts.

Nitrification

Nitrification is a two-step process in which NH3/ NH4+ is converted to NO3-. First, the soil bacteria Nitrosomonas and Nitrococcus convert NH3 to NO2-, and then another soil bacterium, Nitrobacter, oxidizes NO2- to NO3-. These bacteria gain energy through these conversions, both of which require oxygen to occur.

Assimilation

Assimilation is the process by which plants and animals incorporate the NO3- and ammonia formed through nitrogen fixation and nitrification. Plants take up these forms of nitrogen through their roots, and incorporate them into plant proteins and nucleic acids. Animals are then able to utilize nitrogen from the plant tissues.

Ammonification

Assimilation produces large quantities of organic nitrogen, including proteins, amino acids, and nucleic acids. Ammonification is the conversion of organic nitrogen into ammonia. The ammonia produced by this process is excreted into the environment and is then available for either nitrification or assimilation.

Denitrification

Denitrification is the reduction of NO3- to gaseous N2 by anaerobic bacteria. This process only occurs where there is little to no oxygen, such as deep in the soil near the water table. Hence, areas such as wetlands provide a valuable place for reducing excess nitrogen levels via denitrification processes.

Common Forms of Nitrogen

The most common forms of inorganic nitrogen in the environment are diatomic nitrogen gas (N2), nitrate (NO3-), nitrite (NO2-), ammonia (NH3), and ammonium (NH4+). The species that predominate depend on the chemical, physical, and biological environment.

In aquatic environments, the presence of nitrogen as unionized ammonia (NH3) or ammonium (NH4+) is dependent on the pH and temperature.

When the pH is below 8.75, NH4+ predominates. Increases in pH signify increases in the hydroxyl ion (OH-) concentration of the water, meaning the above reaction will shift to the left in order to reach equilibrium. Above a pH of 9.75, NH3 predominates (Hem, 1985). NH3 is a more toxic to aquatic life. If biological assimilation of NH3 is not occurring at a sufficient rate, NH3 may accumulate and cause detrimental effects to aquatic life.

In soils, NH4+ ions are strongly sorbed by clay particles and organic matter, which have a net negative surface charge. In alkaline soils, NH4+ will be converted to NH3 gas, and lost to the atmosphere. Under warm growing conditions, NH4+ in the soil will be transformed to NO3- via nitrification. NO3- is very soluble, and can easily be leached from soils under wet conditions.

Answer:

The digestive system, the circulatory system, and the muscular system work together and process and obtain nutrients from food. The skeletal system, the endocrine system, and the lymphatic system also work with the digestive system and process those nutrients.

Explanation:

Answer:

Below

Explanation:

The reason why we can conclude that all species have common ancerstory is that all the species have several same base pairs. Here are a few listed:

A-G-G-C

As well as this later on:

C-C-A-A-C-C

Because this strand of DNA has several common base pairs, we can conldude that the species have common ancestory that made it this way.

Hope this helps!

Answer:

Sprouting is the natural process by which seeds or spores germinate and put out shoots, and already established plants produce new leaves or buds or other newly developing parts experience further growth.

Answer:

A. Unicellular prokaryotes that live in dust. Monera.

B. Unicellular eukaryotes that line in pond water. Protist.

C. Multicellular eukaryotes that live all over the planet and consume food. Animals.

D. Unicellular prokaryotes that live in volcanic ash. Monera.

E. Multicellular eukaryotes that have cell walls and are heterotrophic. Fungi.

F. Multicellular eukaryotes that have cell walls and are autotrophic. Plants.

Explanation:

The 5 kingdoms are a way of classifying all living organisms on our planet, as each species inside a kingdom shares similarities with the other species in it.

Monera kingdom includes all of the prokaryotic organisms that exist, which includes bacteria and archaea. These beings are characterized by lacking a nucleus and membrane-bound organelles and having one single circular chromosome that is found in the center of the cell. They are unicellular. Example: escherichia coli.

Protists are the most primitive eukaryotes that exist, most of them are unicellular and microscopic, but possess a nucleus and specialized organelles like the rest of the eukaryotes have. Example: yeasts.

Fungi and Plants are quite similar, they are multicellular eukaryotes that have cell walls. Their main difference relies on the way they obtain nutrients: fungi are heterotrophs, they feed off living things; plants, however, are autotrophs and realize photosynthesis (they do not need to feed). Fungi and Plants also reproduce differently: fungi reproduce through spores; plants can reproduce sexually or asexually. Fungi example: amanita; plant example: cactus.

Animals are multicellular eukaryotic organisms that reproduce sexually and are heterotrophs (some feed off plants, some feed off other animals). They are characterized by their ability to move. Example: horse.

Answer:

the answer is false: A scientific theory is a hypothesis that has been extensively tested, evaluated by the scientific community, and is strongly supported. Theories often describe a large set of observations, and provide a cohesive explanation for those observations. An individual cannot come up with a theory.

hope this helps

have a good day :)

Explanation:

Answer:

false

Explanation:

Answer:

I think the Answer is shark and chimpanzee Edit: Just rechecked my Answer this is the correct answer

Sorry for being late :(

Answer:

a

Explanation:

Answer:

I believe the answer is C.  

Explanation:

This is because the basketball is the bigger object here so that should represent something bigger like the solar system.  Then the tennis ball would represent earth because it is the smaller object here.

Answer:

Pancreas

Explanation:

Insulin is an essential hormone produced by the pancreas.

Answer:

Pancreas

Explanation:

During digestion, your pancreas makes pancreatic juices called enzymes. These enzymes break down sugars, fats, and starches. Your pancreas also helps your digestive system by making hormones. These are chemical messengers that travel through your blood.

Answer:

Yes.

Explanation:

Yes, Agriculture activities are precursors for environmental degradation without human and nation benefit because these activities are responsible for the soil degradation. If we skip the human and nation benefit from these agricultural activities, there is disadvantage of these activities which destruction of soil. The tillage practices loosen the soil that leads to the erosion of soil through wind.

Answer:

SEE BELOW

Explanation:

1) DNA: CCA TAG CAC GTA CAA CGT GAA AGG TAA

 mRNA: GGU AUC GUG CAU GUU GCA CUU UCC AUU

AMINO:  Gly lle Val His Val Ala Leu Ser lle

2) DNA: CCG TAG CAT GTT ACA ACG CGA AGG CAC

 mRNA: GGC AUC GUA CAA UGU UGC GCU UCC GUG

AMINO: Gly lle Val Gln Cys Cys Ala Phe Val

Answer:

Tom Cruise is not a trustworthy source because he is an actor, and is not a trained professional who is properly educated about psychiatric medication.

Explanation:

hope this helps

Answer:

I believe the answer is B. Vomiting and Fever.

Explanation:

This answer makes the most sense as spoiled food can lead to sickness, which can lead to vomiting and fever.

Answer:

C.Silicon

Explanation:

By far, the most prevalent bulk material for solar cells is crystalline silicon (c-Si), also known as "solar grade silicon". Bulk silicon is separated into multiple categories according to crystallinity and crystal size in the resulting ingot, ribbon or water.

Answer:

C. silicon is the main material in a solar cell .

hope it is helpful to you

Answer:

Due to environmental conditions.

Explanation:

With the passage of time, environmental conditions change which causes the evolution of of four legged land animals from fish like creature. This change occurs due to change in environment. In water, there is no need for legs because fish moves with the help of fins and tail but the organisms that lives on land has legs in order to move from one place to another so we can say that change in the physical structure of organism occurs due to environment.

Answer:

i got this question today and it's b

Explanation:

Answer:

a process that involves rearrangement of the molecular or ionic structure of a substance, as distinct from a change in physical form or a nuclear reaction.

Explanation:

Answer:

A food chain outlines who eats whom. A food web is all of the food chains in an ecosystem.

Explanation:

Each organism in an ecosystem occupies a specific trophic level or position in the food chain or web.