I need sum help on this

Answer:

D The number of phytoplankton in the river fell by a lot.

Explanation:

Phytoplankton are an important part of the aquatic food web because they are the primary producers of food for zooplankton and foraging fish. ... When zebra mussels are introduced into a waterbody such as Seneca Lake they can impact this food web by competing for food with other organisms that depend on the phytoplankton.

Among all the given options, the correct option is option D.  The number of phytoplankton in the river fell by a lot.

We may define phytoplankton as a sort of autotrophic (self-feeding) plankton which can be found in both freshwater and marine environments.

Photosynthesis is the process through which phytoplankton, such as trees as well as other land plants, obtain energy. This suggests that because phytoplankton depends on sunlight to exist, they are found in the upper layers of lakes and seas (euphotic zone).

According to the definition of phytoplankton, it is spread across a larger surface area than terrestrial plants, is susceptible to less seasonal change, and has significantly faster turnover rates that trees (days versus decades).

Therefore, the correct option is option D.

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Given :

Chlorine's 3p sub level has 5 electrons in it.

To Find :

How many electron(s) more in the 3p sub-level to make it stable.

Solution :

Electronic configuration of Chlorine is :

[Ne] 3s² 3p⁵.

We know, p-orbit is stable with 6 electronic.

Therefore, to stable p-orbit 1 more electron is required in 3p sub-level.

Hence, this is the required solution.

Explanation:

Color. The changing of color of a substance is not necessarily an indicator of a chemical change. For example, changing the color of a metal does not change its physical properties. However, in a chemical reaction, a color change is usually an indicator that a reaction is occurring.

Answer: 1, 3,4,2

Explanation: Solar Wind is a stream of charged particles, called Plasma, released from the surface of the sun. It is formed by the expansion of plasma from the Sun's outermost surface, known as Corona.

Inside the Sun, 4 atoms of hydrogen transform into Helium by a nuclear reaction called Fusion. This reaction produces energy, which travels to the surface. There, it decomposes into plasma, where it continues to heat up.

When the Sun's gravity can't hold it down, the gas streams along the Sun's magnetic field line. Because of the rotation of the Sun, the lines form huge spiral, creating a constant flow of "wind". They extend so far, it generates an interplanetary magnetic field (IMF), which surrounds all the planets in our solar system.

Answer:

It's denser

Explanation:

When something is denser than another substance, it sinks into the substance.

Answer:4

Answer: hope it helps

no you would not be able see the rock in the room because if you close the lights its going to be dark unless you have a glow in the dark light.

Explanation:

Answer:

Volumetric cylinders and volumetric carafes are utilized to gauge volume of fluids contained in them.

Explanation:

Volumetric cylinders and volumetric carafes are utilized to gauge volume of fluids contained in them. They are adjusted for volume remembered for them - this is shown by the checking "IN". The fluid has precise volume when it arrives at the comparing stamping on the scale. Volume is generally demonstrated in ml.  

There are numerous instruments that researchers use to gauge explicit volumes, including a graduated chamber, buret, or pipette.

The best example of how electromagnetic energy is used in everyday life is: B. a patient receiving an X-ray in a hospital.

Energy can be defined as the ability to do work. Thus, energy must be possessed or transferred to a physical object (body) before work can be done.

In Science, there are different forms of energy and these are;

Electromagnetic energy can be defined as form of energy that is typically carried by electromagnetic waves such as X-rays. Thus, the best example of how electromagnetic energy is used in everyday life is a patient that is receiving an X-ray in a hospital.

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Answer:

b

Explanation:

Answer:

i can't see it

Explanation:

wish i could help

Answer:

bio physical chemist

Explanation:

Answer:

True

Explanation:

Answer:

This question is incomplete.

Explanation:

This question is incomplete. However, an atom (as shown in the attachment) is made up three main sub-parts/basic parts namely; protons, neutrons and electrons.

A proton is positively charged and it's found in the nucleus of the atom.

A neutron has no charge and is also found in the nucleus of the atom.

Both the proton and neutron contribute to the mass of an atom; hence the mass number of an atom is the addition of the neutrons and protons. The nucleus is located at the center of the atom (usually represented with a dot) and it's positively charged because it contains just the proton and the neutron.

An electron is negatively charged and it's found orbiting the nucleus of the atom.

NOTE: The atom in the attachment is that of a helium atom. There are two labels there; however, one of those labels (nucleus) is the standard representation for two basic parts of atom (protons and neutrons) as explained earlier.

The drawing that displays the adequate association between the 3 foundational parts of the atom would be:

e- (outside)

p+ & n⁰ (nucleus/inside e-)

An atom comprises of various parts i.e. Protons along with Neutrons and Electrons.

As per the question, the above diagram most effectively shows the association between these three basic parts.

The electron lies outside the shell while the nucleus and the proton with +ve charge would be as mentioned above.

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Answer: generic material and protein coat. Have a great day

Explanation:

Answer: i beleive the answer is 1

Explanation:

Answer:

Do clones have the same rights as humans?

Explanation:

This is a question about ethics

The statement that is an ethical question is "Do clones have the same rights as humans?". That is option A.

An ethical question is a type of question that seeks for what the law says about a particular issue.

For example the question:

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Answer:

The answer is

Explanation:

The percentage error of a certain measurement can be found by using the formula

[tex]P(\%) = \frac{error}{actual \: \: number} \times 100\% \\ [/tex]

From the question

actual volume = 35 mg

error = 35 - 28 = 7

The percentage error is

[tex]P(\%) = \frac{7}{35} \times 100 \\ = \frac{1}{5} \times 100 \\ = 20[/tex]

We have the final answer as

Hope this helps you

Answer:

20%

Explanation:

The formula is [ |va-ve/ve| * 100% ] where e = error and n = number.

|28-35/35| * 100

|-7/35| * 100%

|-1/5| * 100%

0.2 * 100%

20%

Best of Luck!

Answer:

B

Explanation:

Graphs are tools that help in performing calculations as they reduce the source of errors which is done in long mathematical calculations.

Errors in chemical analysis result when there is a difference between observed value and the true value.If the magnitude of errors is large , it results in decrease in accuracy, reproducibility, and precision.

There are three types of errors:1) random error 2) systematic error 3) human error.The cause of random errors are difficult to quantify while the human errors can be minimized by taking a range of readings to reduce the error.

Errors while measuring boiling point may be human errors while noting down the boiling temperature or instrumental or systematic error if there is a fault in the thermometer.

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Answer:

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Polar molecules occur when there is an electronegativity difference between the bonded atoms. Nonpolar molecules occur when electrons are shared equal between atoms of a diatomic molecule or when polar bonds in a larger molecule cancel each other out.

Explanation:

hope it helps u mate

Answer:

Heat, electricity x

Explanation:

Hope this helps! :) x

Answer:

Phenotype is the term used in genetics for the composite observable characteristics or traits of an organism. The term covers the organism's morphology or physical form and structure, its developmental processes, its biochemical and physiological properties, its behavior, and the products of behavior.

Explanation:

I HOPE IT HELPED

Answer:

Explanation:

Just for future reference here's an easy way to remember it PHenotype is the PHysical characteristics

and here's the actual definition: the set of observable characteristics of an individual resulting from the interaction of its genotype with the environment.

Answer:

Yes mixing vinegar and baking soda is Endothermic

Answer:

Endothermic

Explanation:

i know because i did this on a quiz and got 100%

Answer:

if an object weighs more than an equal volume of water, it is more dense and will sink, and if it weighs less than an equal volume of water, it is less dense and will float.

Explanation:

Hope that helps

Answer:

b. the mass of an electron.

Explanation:

Answer:

the first answer is correct don't forget you can use quizzlet app to

Answer: D.) Carbon

Explanation: Carbon is an organic compound, any of a large class of chemical compounds in which one or more atoms of carbon are contently linked to atoms of other elements, most commonly hydrogen, oxygen, or nitrogen.

Answer:

Nuclear reactions involve a change in an atom's nucleus, usually producing a different element. Chemical reactions, on the other hand, involve only a rearrangement of electrons and do not involve changes in the nuclei.

Answer:

the answer is C

Explanation:

Answer:heart

Explanation:

Answer:

the answer is 18 atoms [your welcome]