PLEASE HELP ME !
When did whale ancestors begin living full time in the water?

A) before they nursed under water

B) after they began eating a carnivorous diet

C) before they evolved gills

D) after they lost their hind legs

Answer:

Explanation:

Non-polar liquids are liquids that have covalent bonds in which the shared electrons are shared equally. The molecules of these liquids are repelled by the molecules of water and hence do not dissolve in water. Thus, non-polar liquid are hydrophobic (water dislike/insoluble in water).

When one milliliter of the substance is placed into a beaker filled halfway with water, the substance will be seen "compact" (not dissolving nor interacting) in the beaker of water.

Polarity is defined as the separation of electric charge in a molecule or having an electric dipole moment due to the difference between negative and positively charged ends.

In the given experiment when one milliliter of the substance into a beaker is filled halfway with water, the substance will be seen as coagulating or not dissolving in the water.

The non-polar are the compounds or liquids that do not dissolve in the water. The non-polar molecules are the molecules, which are attracted to the alike molecules, rather than the water molecules.

The non-polar compounds have covalent bonds, in which the electrons are shared among the atoms of the compound.

The molecules of these liquids are repelled in the presence of water or are hydrophobic. These liquids do not dissolve in water.

Therefore, the liquid is hydrophobic.

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Answer:

How are the instructions coded by DNA translated into an organisms physical traits. They are translated into proteins which express an organism's physical traits. In DNA, the structure and size of the four nitrogen bases allows only for one kind of base to pair with one other kind. This is called the base-pairing rule.

Explanation:

Answer:

Explanation:

There are many issues that can be thought of when it comes to both wild shrimp catching and fish farming. When catching wild shrimp, many fishers like to overfish. This can cause shrimp population levels to drop, and cause them to become endangered. There are also parasites, such as tapeworms in brine shrimp, which turn them bright red and make them very easy prey for bird species and such, and Orthione griffenis, better known as Griffen's isopod, which is a small isopod that attaches to a shrimp's gills and sucks the life out of them. Not only are these revolting, they're causing shrimp species to plummet.  

Fish farming is known of, and is a very profitable business. However, there are many concerns that can arise. One of these concerns is unethical treatment of the fish. Some farmers may starve or overfeed their fish, meanwhile others may overbreed them. There's also concerns of how the fish are acquired. If fish are taken from the wild to be farmed, some may see this as cruel or inhumane. Quality of life for the fish is a large concern, as if a fish is unhappy or ill, it can cause the consumer to fall ill from the product, which wound cause trouble for many.

There are many more issues that could arise, but overall, these are some of the most major issues when it comes to shrimp catching and fish farming.

Answer:

flame was extinguished after a few seconds because the jar keeps oxygen from the outside from getting in.

Explanation:

Running out of oxygen makes the flame go out.

Answer:

Carcinoma.

Explanation:

These tumors form from epithelial cells, which are present in the skin and the tissue that covers or lines the body's organs. Carcinomas can occur in the stomach, prostate, pancreas, lung, liver, colon, or breast.

Answer:

amino acids

Explanation:

amino acids in protein build up muscle and provide energy storage. I hope this helps

Answer:

Pros of Biofuels

Renewable – Biofuels are produced from plants and other organic material, so it can be replenished constantly. This is in contrast to the fossil fuels, which are constantly in the process of being depleted.

Clean – Biofuels are environment-friendly. They are much efficient & cleaner than fossil fuels, producing less air pollution and using materials that would otherwise be considered as waste products. Biofuels cause much less greenhouse gas emissions in comparison to the conventional types of transport fuels.

Inexpensive – They can be made easily by using local materials. Biofuels are very cheap to afford. They are the cheapest types of fuels available in the world.

Flexible – can be easily mixed with other fuels.

Additives – Biofuels like ethanol and biodiesel are better for car engines than fossil fuels. Even if not being used as the main fuel source, they can be used as additives to improve performance.

Carbon neutral – the amount of carbon dioxide created by the burning of biofuels is equal to the CO2 absorption capacity of the plants. Hence, no extra CO2 remains in the atmosphere.

Explanation:

Answer:

B

Explanation:

Phagocytosis is the intake of food/particles/bacteria from a cell's exterior.

Answer:

Pie Graph Z

Explanation:

According to the bar graph:

If 40% is Bulldog then the 25% would be Poodle which is a total of 65% leaving two equal bars (so 100%-65%=35%). That is 17.5% for Beagle and 17.5% for Collie.

Hope this helps!

Answer:

Chart Z

Explanation:

I took the same test today and got it correct.

                      I hope this helps!

                                                                            (P.s Have a wonderful day!)                                

Answer:

Its found in both.

Explanation:

Hope this helped!

Answer: It is in both plants and animals

Explanation:

Answer:

Genetic variation among plant populations often occurs along different climatic gradients, such as temperature and precipitation gradients. Environmental factors are often responsible for the patterns of genetic structure observed at small spatial scales

Explanation:

Answer:

The object is at rest.

Thank you and please rate me as brainliest as it will help me to level up

Answer:

Eutrophication effect

Explanation:

The term eutrophication refers to the enrichment of surface water with nutrients. This process is related to human pollution activities.

Eutrophication is the biological process that generates in water by an oversupply of nutrients or organic matter. This matter, mainly compounded with nitrogen or phosphorous, favors the multiplication of phytoplankton (microscopic plants growing on the water surface) and other aquatic plants. This overgrowth leads to an enhance in primary productivity.

Little by little begin sedimentation, caused by the death of some vegetable organisms that sink in the bottom. These sediments rich in organic matter suffer decomposition in the presence of oxygen.

When oxygen disappears, anaerobic bacteria act and produce fermentation.

On the surface, plants and phytoplankton keep growing, creating a mantle that impedes the light to reach deeper areas. The overgrowth of phytoplankton on the water surface and the fermentation processes in the bottom originate toxic compounds that damage the animals. Animals die, creating more sediments in the bottom where there are anaerobic conditions. Decomposing processes and fermentation increases, producing a bad smell.

The result of eutrophication is the stratification of the water mass:

Explanation:

It gives off carbon. So false.

Answer:

bet

Explanation:

Answer:it’s to late

Explanation:

Answer:

true

Explanation:

it requires no energy.

Answer:

it true

Explanation:

Answer:

B is correct

i think so

Explanation:

Answer:

i dont understand your question, please make it clearer

Explanation:

Answer:

Convergent

Subduction

Explanation:

Answer:

B. convergent

C. subduction

Explanation:

Answer: Three factors influence autumn leaf color-leaf pigments, length of night, and weather, but not quite in the way we think.

Answer:

mutation caused by the addition of a nucleotide to an already existing gene sequence called deletion duplication insertion inversion

Explanation:

The ability to endure both long periods of time without water and little sun exposure because the supralittoral zone is the area above the spring high tide line, on coastlines and estuaries, that is regularly splashed, but not submerged by ocean water.

so its B

Answer:

C. The ability to both attach to solid materials and endure long periods of time without water

Explanation:

Answer:

Active transport

Explanation:

The text is most likely speaking about active transport, such as endocytosis and exocytosis, which is essentially the process in which a cell uses to consume larger particles/molecules and expose of them, respectively.

Answer:

(C) damaging I think but not sure

Answer:

useless because harmful,unsafe, damaging and destructive are synonym

Answer:

B. into an aquifer

Explanation:

People can obtain groundwater by drilling a well into an aquifer.

An aquifer is a porous and permeable formation where groundwater can be found.

Answer:

b. into an aquifer

Explanation:

Answer:

I think it’s active transport

The laboratory setup would most likely be used to demonstrate the process of diffusion.

A Laboratory may be defined as a place where a variety of experiments may be performed depending on the work or projects it handles.

In this experiment, an artificial cell containing glucose and starch solution is dipped into the water containing a starch indicator.

The concentration of glucose or starch is found to be high in the artificial cell, hence, it removes the water or particles from the inside to the outside of the cell.

Diffusion may be defined as the movement of particles or matter from a region of high concentration to a region of low concentration.

Therefore, the laboratory setup would most likely be used to demonstrate the process of diffusion.

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Answer:

its 2 3 4

Explanation: