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Answer:

La contaminación del agua subterránea puede resultar en una mala calidad del agua potable, pérdida de suministro de agua, sistemas de aguas superficiales degradados, altos costos de limpieza, altos costos de suministros alternativos de agua y / o posibles problemas de salud. Las consecuencias de las aguas subterráneas contaminadas o de las aguas superficiales degradadas suelen ser graves

Answer:

If this is the question on edge2020 the correct answers are:

-The cell membrane’s protein channels only let certain molecules pass through.

-The cell membrane has protein channels that are partly inside and partly outside the cell.        

-   The cell membrane is a double layer of phosphate molecules and lipids.

Explanation:

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Answer:

Commensalism

Explanation:

the wren bird is benefiting but the cactus not benefiting and it isn't being harmed at all

Answer:

cell wall is absent in

human

butterfly

shark

Answer:

i think lipids

Explanation:

Answer:

Adding ice to a glass of water causes the temperature of the water to decrease because the thermal energy in the water causes the ice to melt. A grill gives off thermal energy by burning propane.

Answer:

approximately chemical elements naturally occur on earth

Answer:

About 92 I believe

Explanation:

Answer:

negative feed back

Explanation:

it gives sweat and causes bad acne

We perform a Chi-square analysis to find out if the difference between observed and expected is due to chance or not. In this example, 1) FD=1 / 2) X² = 2.22 / 3) Fail to reject the null / 4) 75.

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Since a complete introduction to Chi-square was provided, we will proceed with the problem analysis.

1st Cross: Yellow   x   green

Parentals)  YY    x      yy

F1) 100% Yy, yellow

2nd Cross:  Yellow   x   yellow (From F1)

Parentals)    Yy    x     Yy

F2) 3/4 = 75% of the progeny is expected to be yellow

     1/4 = 25% of the progeny is expected to be green

We know from the data, that there are 1500 individuals in F2. So we can get the expected number of individuals from this data.

100 % of the progeny ----------------------- 1500 individuals

75 % yellow ------------------------------------X = 1125 individuals

25% green -------------------------------------X = 375 individuals

We assume the population is in H-W equilibrium, but we observe differences in what we expect to see and what we actually see. We want to know why.

Now we will make a table resuming information

                               Yellow                       Green

Observed                 1150                            350

Expected                  1125                            375

(Obs-Exp)²/Exp        0.555                         1.666

We can see that the table value is greater than the X² value, so there is not enough evidence to reject the null hypothesis.

The genotypes might be in equilibrium, and there might be independent assortment.

This results suggest that the difference between the observed individuals and the expected individuals is by random chances.

So now let us answer the questions,

1) Determine the degrees of Freedom of the phenotypic ratio for this genetic cross ⇒ DF = 2 - 1 = 1

2) What is the result of your Chi-squared analysis? ⇒ X² = 2.22

3) Do we fail to reject or reject the null hypothesis? ⇒

We Fail to reject the null hypothesis. There is not enough evidence to reject it.

4) If we flipped a coin 100 times. Which of the following is the minimum number necessary to achieve significance? 75 is the minimum number necessary to achieve significance

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Answer:

njsjsjsksksksksisiaoaoaoa

Answer:

There are four types of consumers: omnivores, carnivores, herbivores and decomposers. Herbivores are living things that only eat plants to get the food and energy they need. Animals like whales, elephants, cows, pigs, rabbits, and horses are herbivores. Carnivores are living things that only eat meat.

Answer:

Like terrestrial biomes, aquatic biomes are influenced by a series of abiotic factors. The aquatic medium—water— has different physical and chemical properties than air. Even if the water in a pond or other body of water is perfectly clear (there are no suspended particles), water still absorbs light. As one descends into a deep body of water, there will eventually be a depth which the sunlight cannot reach. While there are some abiotic and biotic factors in a terrestrial ecosystem that might obscure light (like fog, dust, or insect swarms), usually these are not permanent features of the environment. The importance of light in aquatic biomes is central to the communities of organisms found in both freshwater and marine ecosystems.  

Explanation:

The ocean is categorized by several areas or zones (Figure 1). All of the ocean’s open water is referred to as the pelagic zone. The benthic zone extends along the ocean bottom from the shoreline to the deepest parts of the ocean floor. Within the pelagic realm is the photic zone, which is the portion of the ocean that light can penetrate (approximately 200 m or 650 ft). At depths greater than 200 m, light cannot penetrate; thus, this is referred to as the aphotic zone. The majority of the ocean is aphotic and lacks sufficient light for photosynthesis. The deepest part of the ocean, the Challenger Deep (in the Mariana Trench, located in the western Pacific Ocean), is about 11,000 m (about 6.8 mi) deep. To give some perspective on the depth of this trench, the ocean is, on average, 4267 m. These zones are relevant to freshwater lakes as well.

The ocean is the largest marine biome. It is a continuous body of salt water that is relatively uniform in chemical composition; it is a weak solution of mineral salts and decayed biological matter. Within the ocean, coral reefs are a second kind of marine biome. Estuaries, coastal areas where salt water and fresh water mix, form a third unique marine biome.

The intertidal zone, which is the zone between high and low tide, is the oceanic region that is closest to land (Figure 2). Generally, most people think of this portion of the ocean as a sandy beach. In some cases, the intertidal zone is indeed a sandy beach, but it can also be rocky or muddy. Organisms are exposed to air and sunlight at low tide and are underwater most of the time, especially during high tide. Therefore, living things that thrive in the intertidal zone are adapted to being dry for long periods of time. The shore of the intertidal zone is also repeatedly struck by waves, and the organisms found there are adapted to withstand damage from the pounding action of the waves (Figure 2). The exoskeletons of shoreline crustaceans (such as the shore crab, Carcinus maenas) are tough and protect them from desiccation (drying out) and wave damage. Another consequence of the pounding waves is that few algae and plants establish themselves in the constantly moving rocks, sand, or mud.

Advancements in computer technology most directly influenced knowledge of wildlife and ecosystems by spreading information about them, about their role in ecosystems, their importance, etc.

Ecosystems consist of both living organism and non-living substances. Examples of ecosystems are the grassland ecosystem, the ocean ecosystem, the desert ecosystem, etc. In a grassland ecosystem, all organisms, such as plants, animals, and bacteria, work together in coordination. Different ecosystems have different wild lives . Example: In a forest ecosystem, there are tigers, elephants, lions, donkeys, etc.

They are affected by different human-made activities as well as by natural calamities such as earthquakes. The concerns about the changing ecosystem and its impact on wild life, such as the impact of climate change on them and global warming, are highlighted due to the advancements in computer technology. Activists and the general public spread awareness about them.

Hence, in this way, the advancements in computer technology help spread awareness among people about wildlife and the ecosystems .

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Answer:

low levels of ultraviolet radiation ;)

Photoheterotrophs. A heterotroph is an organism that depends on organic matter already produced by other organisms for its nourishment. Photoheterotrophs obtain their energy from sunlight and carbon from organic material and not carbon dioxide.

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Answer:

Taxonomy (which literally means “arrangement law”) is the science of classifying organisms to construct internationally shared classification systems with each organism placed into more and more inclusive groupings

Explanation:

Hope it Helps :P

Answer:

B

Explanation:

gshsfhpxif ux jx,xu if fi

Answer:

Below! : )

Explanation:

What is biodiversity? Well, in simple terms, biodiversity refers to all the variety of life that can be found on Earth (plants, animals, fungi, and micro-organisms) as well as to the communities that they form and the habitats in which they live. But how is biodiversity connected to healthy ecosystems? Well, many factors can contribute to this question but  Biodiversity boosts ecosystem productivity where each species have an important role to play. With this in play we can see that it is healthy and keeps ecosystems safe.

I hope this helps! : )

Answer:

the number of radioactive atoms will be left after 30 seconds is

D. 8 EIGHT

Answer:

6 atoms

Explanation:

Answer:

there are a total of 3 carbon atoms 6 oxygen atoms 5 Na atoms

in total there is 14 atoms

Explanation:

hope i helped if im wrong please feel free to let me know

Answer:

A eukaryote is any organism whose cells have a cell nucleus and other organelles enclosed within membranes. any of a number of organized or specialized structures within a living cell.

Explanation:

Cocaine, amphetamine, and MDMA are all central nervous stimulants that agonize dopamine neurotransmission.

Cocaine, amphetamines, caffeine, nicotine, and MDMA (ecstasy) all cause the nervous system to become more active.

In biology and medicine, chemicals that hasten the transmission of messages between nerve cells are referred to as stimulant drugs. These chemicals include caffeine, nicotine, cocaine, and ecstasy.

Dopamine accumulates excessively between nerve cells as a result of cocaine's ability to stop it from being recycled. The high from cocaine is eventually brought on by this dopamine overflow, which interferes with regular brain activity.

Therefore, stimulant medicines have the ability to speed up the rate at which messages are transferred inside the nervous system.

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Answer:

Hey mate....

Explanation:

This is ur answer...

Talk about how plants and animals affect other things and give some examples e.g. squirrels bury acorns to save for winter annd some of them grow into oak trees, litter gets washes into storm drains into the ocean and affects wildife, spraying for mosquitoes kills honey bees that pollinate the flowers of apple trees etc...

Hope it helps!

Brainliest pls!

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Answer:

A

Explanation:

correct me if I'm wrong thanks

strobila or cone produce egg cell in non flowering plants

The organ in many nonflowering plants which produces an egg cell is the strobila or cone produce.

Nonflowering plants don't produce flowers; instead, they produce microscopic reproductive elements called seeds or spores that may be used to create additional plants that look just like them.

A shorter stem with several altered leaves bearing sporangia makes up strobili. Gymnosperms, like all seed plants, are heterosporous. Usually, different cones are used to carry the sporangia that produce the male microspores as well as female megaspores.

Nonflowering plants like ferns, mosses, etc other nonflowering plants have reproductive organs called antheridium and archegonium. The male gametophyte's primary source of sperm cells would be the antheridium (male gametes). Numerous sperm will be produced by the antheridium for fertilization.

Therefore, The organ in many nonflowering plants which produces an egg cell is the strobila or cone produce.

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Answer:

transform or changed

Explanation:

you can change matter from one stay to the next but you cant actually create it or completely destroy it