List the layers from oldest to youngest

Eutrophication is when the environment becomes enriched with nutrients. This can be a problem in marine habitats such as lakes as it can cause algal blooms. Some algae even produce toxins that are harmful to higher forms of life. This can cause problems along the food chain and affect any animal that feeds on them.

Hope it helps ^^

Answer:

Excessive nutrients lead to algal blooms and low-oxygen (hypoxic) waters that can kill fish and seagrass and reduce essential fish habitats. Eutrophication sets off a chain reaction in the ecosystem, starting with an overabundance of algae and plants.

Explanation:

brainliest plzz

Answer:

Nucleus, mitochondrion, and chloroplast

Explanation:

If I were to be a prokaryotic cell that suddenly develops the ability to take on 3 organelles that I do not already have, I would pick a nucleus, a mitochondrion, and a chloroplast.

The presence of the nucleus would enable the freely lying genetic materials in the cytoplasm to become organized and packaged within the nucleus, thereby enabling more controls over transcription and translation processes.

Also, the presence of mitochondrion would increase the efficiency of energy generation through oxidative phosphorylation and the chloroplast will enable the cell to be able to manufacture its own food through photosynthesis rather than depending on external sources for foods.

Answer:

Veins

1l carry blood from tissue of the body to the heart

2) are usually found closer beneath the skin

3) are less muscular then arteries

4) collapse if blood flow stops

arteries

1) carry blood back away from the heart to the tissue of the body.

2) found deeper within the body

3) are more muscular then veins

4) would generally remain open even if blood stops because of it's muscular structure.

Answer:

According to Chargaff's rule, if a DNA strand has 30% guanine before to semi-conservative replication, the  percentage of thymine that will have each new strand after replication will be 20% (option A).

Explanation:

A DNA molecule stores the genome of a living organism in a specific sequence of its nitrogenous bases adenine, guanine, cytosine and thymine. By knowing the percentage of a nitrogenous base in the DNA, the percentage of the other bases can be established using Chargaff's base pair rule.

Chargaff was able to establish that in a DNA molecule the ratio purine:pyrimidine is 1:1, so there must be the same amount of guanine as cytosine and a similar amount of adenine for thymine, taking into account the complementarity of the bases.

According to the base pair rule, if in a DNA strand there is 30% guanine, in the molecule there is:

In this case, Chargaff's rule is useful to determine the percentage of thymine that each new strand will have after replication, corresponding to 20%.

Answer:

Declining populations of phytoplankton, the basis of the marine food chain, will alter the seawater hues, potentially decimating fisheries. The world's oceans are warming and growing more acidic as a result of climate change, and a provocative new study suggests they'll be changing color too.

Explanation:

Hope this is good :)

The major part in the earth system shows biosphere.

The areas of Earth where life is present are referred to as the biosphere. The biosphere encompasses everything from the deepest tree roots to the shadowy depths of the ocean, lush rain forests, and lofty mountaintops.

The areas of Earth where life is present are referred to as the biosphere. The biosphere includes the deepest tree roots, the shadowy depths of the ocean, lush jungles, and tall mountain peaks.

Earth is described by scientists as a sphere. The lithosphere is the Earth's solid surface layer. The air layer that rises above the lithosphere is known as the atmosphere. The hydrosphere is the collection of water on Earth's surface, below the surface, and in the atmosphere.

Therefore, The major part in the earth system shows biosphere.

To learn more about biosphere, refer to the link:
https://brainly.com/question/15083566

#SPJ2

Answer:

Animal should be bred once or twice per year.

Explanation:

their is interval of time where they get enough opportunity to rest and recover between pregnancies.

sorry if I'm wrong.

Your dog experiences a lot of pain throughout breeding, pregnancy, birth, and delivery. She needs all the time you can offer her to get over her trauma, animals should be bred once or twice per year, hence option c is correct.  

We advise giving her at least one heat cycle between each breeding, at the very least. Selective breeding is the process of controlling the breeding of organisms to either show or removes a certain trait.

Selective breeding makes use of artificial selection to direct the genetic transmission of desirable traits. In contrast to natural selection, selective breeding focuses on traits that will benefit humans. It is a technique that is widely used in plant management and animal husbandry.

Therefore, this selective breeding helps to obtain and retain the homozygous qualities of selected characters, animals bred once or twice per year rest and recover between pregnancies.

Learn more about breeding, here:

https://brainly.com/question/28624932

#SPJ2

Answer:

The cell is the smallest structural and functional unit of living organisms, which can exist on its own. Therefore, it is sometimes called the building block of life. Some organisms, such as bacteria or yeast, are unicellular—consisting only of a single cell—while others, for instance, mammalians, are multicellular.

Explanation:

Answer:The cell is the smallest structural and functional unit of living organisms, which can exist on its own. Therefore, it is sometimes called the building block of life. Some organisms, such as bacteria or yeast, are unicellular—consisting only of a single cell—while others, for instance, mammalians, are multicellular.

Answer: I would agree

Explanation:

The label that best describes the image is Volcano quietly erupts due to low-viscosity magma!. The correct option is c.

A volcano is an aperture or vent through which lava, tephra (small rocks), and steam are released onto the surface of the planet.

The broad-domed volcano with gently sloping sides known as the Shield Volcano is known for its frequent eruptions of fluid, basaltic lava.

A broad-topped volcano with gently sloping sides known as the Cinder Volcano is known for its frequent eruptions of fluid basaltic lava. A broad-topped volcano with gently sloping sides known as a composite volcano is one that frequently erupts with fluid basaltic lava.

Therefore, the correct option is c. Volcano quietly erupts due to low-viscosity magma!

To learn more about volcanoes, refer to the link:

https://brainly.com/question/2681336

#SPJ6

The question is incomplete. The image is added below:

Answer: C on edg : Volcano quietly erupts due to low-viscosity magma!

Answer:

Since there are many factors that can produce a mutation, the event that would be most likely to cause a mutation is a nucleotide is inserted into a DNA strand.

Explanation:

A genetic mutation involves an alteration of the DNA that leads to a defect in protein synthesis and a structural or functional alteration of an individual.

Of all the factors that can produce a mutation, the insertion of one or two nucleotides into the DNA strand produces a point mutation, or molecular mutation, of the insertion type.

    The other options are not correct because the processes of mRNA traveling out of the nucleus, mRNA releasing from the DNA strand or enzymatic transcription of mRNA in the nucleus can carry over a mutation produced in the DNA, but they are not mutation-producing factors.

Answer:

The position of the Moon and Earth are different.

Answer:

The answer is C.

Explanation:

Over time knowledge changes, what might have been true back then isnt true now.

Answer:

1.) Self-Pollinating, 2.) Cross-Pollinating, 3.) Fertilize

Explanation:

Pea plants are know to self-pollinate, so when Mendel transferred pollen to one pea plant to the other, it would be called cross-pollinating. Think of it as exchanging. This allowed the pea plants to fertilize the eggs.

1.) Self-Pollinating,

2.) Cross-Pollinating,

3.) Fertilize

Learn more:

brainly.com/question/1483517

Answer:

24800

Explanation:

To get the velocity for this problem

we need to simply multiply the number together

124 × 200 = 24,800

Velocity equation

Hertz x meters = velocity

Answer:

the presence of antennae

Explanation:

Answer:

Viviparity

Explanation:

Answer with Explanation:

There's a fewer number of predators than prey because they are on the top level of the Food Pyramid. This means that they don't necessarily have to pass their energy to other organisms because only a few organisms consume them as compared to the "Primary Producers" like the phytoplankton and the algae, which support a large number of organisms above them.

The predators are more likely to receive also the least amount of energy compared to the organisms below the pyramid because as the energy is consumed as "food," only a portion of the food's energy is being passed to other organisms from one level to the other.

Answer: C

Explanation: This would actually have a negative effect, if we were to lower natural gas prices in the community, it would mean more usage of natural gas (a fossil fuel).

Answer:

Lowering Natural Gas Prices in the Community

Explanation:

took the test on a p ex

In the 1950s, Francis Crick and James Watson worked together at the University of Cambridge, England, to determine the structure of DNA. Other scientists, such as Linus Pauling and Maurice Wilkins, were also actively exploring this field. Pauling had discovered the secondary structure of proteins using X-ray crystallography. X-ray crystallography is a method for investigating molecular structure by observing the patterns formed by X-rays shot through a crystal of the substance. The patterns give important information about the structure of the molecule of interest. In Wilkins’ lab, researcher Rosalind Franklin was using X-ray crystallography to understand the structure of DNA. Watson and Crick were able to piece together the puzzle of the DNA molecule using Franklin’s data (Figure 9.2). Watson and Crick also had key pieces of information available from other researchers such as Chargaff’s rules. Chargaff had shown that of the four kinds of monomers (nucleotides) present in a DNA molecule, two types were always present in equal amounts and the remaining two types were also always present in equal amounts. This meant they were always paired in some way. In 1962, James Watson, Francis Crick, and Maurice Wilkins were awarded the Nobel Prize in Medicine for their work in determining the structure of DNA.

Photo in part A shows James Watson, Francis Crick, and Maclyn McCarty. The x-ray diffraction pattern in part b is symmetrical, with dots in an x-shape.

Figure 9.2 Pioneering scientists (a) James Watson and Francis Crick are pictured here with American geneticist Maclyn McCarty. Scientist Rosalind Franklin discovered (b) the X-ray diffraction pattern of DNA, which helped to elucidate its double helix structure. (credit a: modification of work by Marjorie McCarty; b: modification of work by NIH)

Now let’s consider the structure of the two types of nucleic acids, deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). The building blocks of DNA are nucleotides, which are made up of three parts: a deoxyribose (5-carbon sugar), a phosphate group, and a nitrogenous base (Figure 9.3). There are four types of nitrogenous bases in DNA. Adenine (A) and guanine (G) are double-ringed purines, and cytosine (C) and thymine (T) are smaller, single-ringed pyrimidines. The nucleotide is named according to the nitrogenous base it contains.

(a) Each DNA nucleotide is made up of a sugar, a phosphate group, and a base.

Figure 9.3 (a) Each DNA nucleotide is made up of a sugar, a phosphate group, and a base.

(b) Cytosine and thymine are pyrimidines. Guanine and adenine are purines.

Figure 9.3 (b) Cytosine and thymine are pyrimidines. Guanine and adenine are purines.

The phosphate group of one nucleotide bonds covalently with the sugar molecule of the next nucleotide, and so on, forming a long polymer of nucleotide monomers. The sugar–phosphate groups line up in a “backbone” for each single strand of DNA, and the nucleotide bases stick out from this backbone. The carbon atoms of the five-carbon sugar are numbered clockwise from the oxygen as 1′, 2′, 3′, 4′, and 5′ (1′ is read as “one prime”). The phosphate group is attached to the 5′ carbon of one nucleotide and the 3′ carbon of the next nucleotide. In its natural state, each DNA molecule is actually composed of two single strands held together along their length with hydrogen bonds between the bases.

Watson and Crick proposed that the DNA is made up of two strands that are twisted around each other to form a right-handed helix, called a double helix. Base-pairing takes place between a purine and pyrimidine: namely, A pairs with T, and G pairs with C. In other words, adenine and thymine are complementary base pairs, and cytosine and guanine are also complementary base pairs. This is the basis for Chargaff’s rule; because of their complementarity, there is as much adenine as thymine in a DNA molecule and as much guanine as cytosine. Adenine and thymine are connected by two hydrogen bonds, and cytosine and guanine are connected by three hydrogen bonds. The two strands are anti-parallel in nature; that is, one strand will have the 3′ carbon of the sugar in the “upward” position, whereas the other strand will have the 5′ carbon in the upward position. The diameter of the DNA double helix is uniform throughout because a purine (two rings) always pairs with a pyrimidine (one ring) and their combined lengths are always equal. (Figure 9.4).

Answer:

starfish has unsegmented body

bird is a vertebrate

octopus packs colored blood

scorpion lacks annternna

Answer:

did you get the answer yet

Answer: Duplication of chromosome can cause multiple genes to work in an uncontrolled manner.

Explanation:

There are numerous genes that are encoded by the chromosome. The duplication in the chromosome can cause multiple genes to go out of control that can cause patterning of the body and head which can influence the wing patterning or pigmentation. For example in Down's syndrome the three copies of chromosome number 21 are formed which is the trisomy of chromosome number 21 which can cause developmental issues in humans symptoms are flattened face, short neck, small ears, and others.