23. What’s that answer?

Answer:

i think the answer is b

Explanation:

B. Allele frequencies change randomly each generation

Answer:

B

Explanation:

Genetic drift is the alteration of different genotypes in a small population which can cause individuals and organisms getting wiped out, not being able to reproduce, and disappearance. Allele frequencies change randomly each generation in a gene pool (collection of different genes present in a particular population: species in this gene pool have a choice to leave the gene pool or die out).

Answer:

a huge amount of dust thrown up into the atmosphere.

Explanation:

"If the asteroid hits on land, there would be a huge amount of dust thrown up into the atmosphere. If it hits in water, then there would be an increase in water vapor in the atmosphere. This would result in an increase in rain resulting in landslides and mudslides."

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Answer:

evolution of bipedalism in homo sapiens

Answer: Advantages: better crop yield, healthier plants and animals, and more appealing food. Disadvantages: potential health issues, lower quality of life for animals, ecological disruption.

Explanation:

(This answer includes and focuses on the process of artificial selection as genetic modification)

Advantages

Better crop yield: genetic modification is commonly used in agriculture to select plants with better yields, allowing future plant generations to grow more and produce more.

Healthier plants and animals: plants and animals can be bred or otherwise modified to increase their disease resistance or to eliminate health issues found in earlier generations.

More appealing food: farmers can breed the plants with the best-tasting fruits to create an overall more appealing fruit. Scientists have also used direct genetic modification through genome editing to create new types of apples and other fruits.

Disadvantages

Potential health issues: most easily understood with dog breeds, which have been artificially selected and bred to have specific characteristics. This leads to some breeds being more susceptible to various health issues, namely respiratory disruption in those with flattened faces.

Lower quality of life for animals: seen in poultry farming, where chickens and other birds have been modified to be as big as possible. While this does provide a higher meat yield, it also causes the birds to live for an extremely short amount of time, most of which is spent being unable to move.

Ecological disruption: in the attempt to prevent insects from feeding on plants through genetic modification, the insect populations can be harmed by a lack of food sources. This can lead to other disruptions up the food chain, that, while typically minor, could eventually have larger consequences.

Answer: Advantages: better crop yield, healthier plants and animals, and more appealing food. Disadvantages: potential health issues, lower quality of life for animals, ecological disruption.

Explanation: (This answer includes and focuses on the process of artificial selection as genetic modification) Advantages Better crop yield: genetic modification is commonly used in agriculture to select plants with better yields, allowing future plant generations to grow more and produce more. Healthier plants and animals: plants and animals can be bred or otherwise modified to increase their disease resistance or to eliminate health issues found in earlier generations. More appealing food: farmers can breed the plants with the best-tasting fruits to create an overall more appealing fruit. Scientists have also used direct genetic modification through genome editing to create new types of apples and other fruits. Disadvantages Potential health issues: most easily understood with dog breeds, which have been artificially selected and bred to have specific characteristics. This leads to some breeds being more susceptible to various health issues, namely respiratory disruption in those with flattened faces. Lower quality of life for animals: seen in poultry farming, where chickens and other birds have been modified to be as big as possible. While this does provide a higher meat yield, it also causes the birds to live for an extremely short amount of time, most of which is spent being unable to move. Ecological disruption: in the attempt to prevent insects from feeding on plants through genetic modification, the insect populations can be harmed by a lack of food sources. This can lead to other disruptions up the food chain, that, while typically minor, could eventually have larger consequences.

Answer:

The radioactive decay causes emission of radiation. Unstable isotopes have a high number of neutrons or protons in their nuclei.

Answer:c

Explanation:

Water pollution is the introduction of pollutants either naturally or due to human activities. Runoff from many farms can result in water pollution.

Water pollution is the contamination of water sources with some pollutants which make the water unusable for the purposes like drinking, cooking, cleaning, swimming, and other activities.

These substances can be chemicals, bacteria, parasites, etc. All sorts of pollution make go to the water directly or indirectly.

One of the prevalent sources of water pollution is runoff from many farms.

Thus, the correct option is C.

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Prokaryotes and eukaryotes differ in the presence of the nucleus and the organelles. Prokaryotes are small in size and can easily reproduce and adapt.

Prokaryotes are primitive simple cells that are characterized by single cells with no distinct nucleus and membrane-bounded organelles. Cyanobacteria and bacteria are examples of prokaryotes.

The simple structure of the prokaryotes makes them adapt to environmental changes faster than the complex eukaryotic cell. They have a quick reproduction rate and short life cycles, unlike plants and animals.

The simple and small system of the prokaryotic cell allows the movement and diffusion of the ions and molecules easily. They are extremophiles and can survive harsh environments.

Therefore, small and simple prokaryotic cells are advantageous over eukaryotic cells.

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When Ca(OH)₂ is added to a beaker of water the solution would turn phenolphthalein pink. thus option B is correct.  

Phenolphthalein is a common indicator and is only pink when in basic solutions.  

By adding calcium hydroxide, you are turning the solution into a basic solution since the concentration of OH⁻ ions is going up and therefore any phenolphthalein in solution would turn pink.

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Answer:

b

Explanation:

Charles Darwin’s theory of evolution states that evolution occurs by natural selection. Individuals in a species shows variation in physical characteristics. This variation is because of the differences in their genes.

Evolution is the process by which species adapt over time in response to their changing environment.

Individuals with characteristics best match to their environment are more likely to survive, finding food, avoiding predators and resisting disease. These individuals are more likely to reproduce and pass their genes on to their children.

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Is needed to decompose pharmaceuticals and pesticides in wastewater ozonation and aeration

Ozonation is a chemical oxidation technique that promotes the complete or partial decomposition of organic pollutants that are difficult to degrade.

With this information, we can conclude that is needed to decompose pharmaceuticals and pesticides in wastewater ozonation and aeration

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Answer:

Taenia saginata and Taenia solium are the two taeniids of greatest economic and medical importance, causing bovine and porcine cysticercosis and taeniasis in humans. In addition, T. solium eggs can infect humans, often giving rise to fatal neurocysticercosis (12, 39).

Explanation:

Answer:

I believe it is b

Explanation:

I may be incorrect but genetics and natural selection are my passion so I believe this is correct. The way genes work is you receive half of your father's genes and half of your mothers. Whichever genes are dominant end up showing up on your body, which is called a phenotype. DNA is what makes up genes and makes them able to affect you. Let me know if I'm incorrect.

Answer: Tetrafluoroethane, Chlorofluorocarbon, Polystyrene, and Acrylonitrile.

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Because it is environmently friendly and doesn't cause air pollution.

Answer:

b) T-C-A-T-G

Explanation:

Apples are to Trees

as Cars are to Garages

adenine (A) pairs with thymine (T)

and

cytosine (C) pairs with guanine (G)

Prolonged exposure to above-normal oxygen partial pressures, or shorter exposures to very high partial pressures, can cause oxidative damage to cell membranes, collapse of the alveoli in the lungs, retinal detachment, and seizures.

As the world changes, plants and animals change with it. Aside from a few living fossils, the species we see today are very different from species that lived in the past.

A living being that lived more than 11 thousand years ago is considered a fossil, that is, before the Holocene, which is the current geological epoch.

Ancient remains or evidence, but less than 11,000 years old, such as sambaquis, are classified as subfossils.

The dating of a fossil can be done based on the already known percentage of Carbon-14 (C14) in relation to Carbon-12 (C12) of living matter (without decomposition).

Thus, the fossil record can be used to show that organisms changed to meet new conditions.

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Answer:

Glands

Explanation:

Prostate Gland

This walnut-sized gland surrounds a portion of the urethra and produces some of the fluid in semen.

Answer:

The answer would be testes.

Semen or seminal fluid refers to the organic fluid which contains spermatozoa.

The semen is produced by testes and associated reproductive glands such as seminal vesicles, prostate glands, and bulbourethral gland.

The testes and other glands are located mainly in the scrotum of the person.

Thus, the testes and other reproduc

Explanation:

thats the right answer

Answer:

It is an important part of many cells and processes such as amino acids, proteins and even our DNA. Nitrogen is used to construct the basic building blocks of life, such as amino acids, nucleic acids, and proteins.

Explanation:

Beavertail cactus

:-- they are primary consumer because they produce the material and store the energy at the bottom of the food chain. In other words, all animals are dependent, either directly or indirectly on the food materials stored in plants.

Answer:

alright bet I got this

Explanation:

Have you ever wondered what can happen to those plastic bottles you toss away? How do they decompose? What happens to them? Its simple really, they get eaten! No, not by people of course they are eaten by a tiny critter called a wax worm. The wax worms earn their name because they are often found living in beehives where they eat the beeswax.

Wax worms much like mealworms are used to break down things that would normally be endangering to our environment. These seemingly useless little animals do a whole lot for our environment especially with the amount of waste we produce! They really are a tiny secret hero to todays pollution problem.

After quite a few studies scientists are still unsure on how was worms can breakdown plastic with their tiny bodies but they appreciate the work these little recyclers do. They have a lot of theories on how these worms do this one of the theories is that bacteria can break it down, another theory is that enzymes in the worms intestines break down plastics. Though scientists believe it will take a while to figure this out they enjoy studying and learning more about this tiny helper.

Answer:

Redi disproved spontaneous generation.

Explanation:

CARRY ON LEARNING

Answer: (B) Redi disproved spontaneous generation.

Explanation: EDGE 2022

Explanation:

The cell containing eukaryotic cell enclosed by plasma membrane and containing a membrane bounded both nucleus and organelles