How do toothed whales produce echolocating sounds?

Answer:

The correct answer is - A. phototropic and gravitropic.

Explanation:

A plant seedling grows usually two-direction shoots or stems towards light and roots towards the soil or in the direction of gravity. The movement of the plant toward a specific stimulus or effect parts is called tropism and different parts move in a different direction.

The movement of the roots of the plant is usually towards the direction of soil or gravity and this is called gravitropic. The shoot or stem grows from the seedling towards the direction of light and it is called phototropic.

Explanation:

Primary succession, type of ecological succession (the evolution of a biological community’s ecological structure) in which plants and animals first colonize a barren, lifeless habitat. Species that arrive first in the newly created environment are called pioneer species, and through their interactions they build a simple initial biological community. This community becomes more complex as new species arrive. Primary succession is distinguished from secondary succession, which is the recovery of an existing biological community after a disturbance sets back the community’s ecological structure to an earlier stage.

When a small square is sectioned off for study and the plants, animals, and other organisms in that section are counted, the study is called a quadrat sampling.

Quadrat sampling is also referred to as quadrat study. In ecological research, it is a method used to determine the number or density of organisms in a certain specific area.

It involves dividing the study area into smaller, equally sized plots or squares called quadrats. The size of the quadrat depends on the organisms being studied and the scale of the research.

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Answer:

An understanding of biology can help you make choices and decisions that affect your health. Biologists and other scientists research environmental issues such as pollution, biodiversity,land conservation, and natural resource use.

Explanation:

Hope this helped Mark BRAINLIEST!!!

Answer:

The correct answer would be - Two major types of mutations are deletions and substitutions.

Explanation:

The two major types of mutations are deletion and substitution, other than these there are many more mutations that are categorized under gene mutations and chromosomal mutation.

The deletion mutation takes place in the conditions where the DNA deletes or missed copying the nucleotide in a new  DNA molecule. This type of mutation can occur in one or more nucleotides. Whereas Substitution mutation occurs when there is a wrong nucleotide added to the DNA sequence or substitute with other.

Both could be deleterious and takes place at the nucleotide level. Both mutation depends on the number of nucleotide or the location of the mutation on the gene.

Answer:

Answer of this qurstion is true

Answer:

0.7

Explanation:

Given that in statistics, the Relative Frequency is the Frequency of the class divided by Total.

Hence, in this case, the Relative Frequency of black hair is the Frequency of black hair divided by the Total.

Hence, we have 70 ÷ 100

=> 0.7

Therefore, the correct answer is 0.7 Relative frequency.

Answer:

D. 4 times as great

Explanation:

The inertia of an object is the resistance offered by the object to change in its motion or position.

Then concept of inertia is obtained from Newton's first law of motion which states that an object which is not subjected to any net external force will remain its position of rest or constant velocity of motion until some net external force acts on it. The object at rest will then start to move whereas the object moving at constant velocity will experience a change in its speed or direction of motion.

This reluctance to change position is greater, the more massive an object is as well as the higher the speed of motion of the object. Thus, inertia is directly proportional to the mass of the object as well to the velocity of an object in motion.

From Newton's first law, inertia can be calculated as the force to be overcome to mobile an object, i.e. Inertia = F = ma

Where m is mass of object, a = acceleration of the object.

Objects on the earth's surface experience a constant acceleration, g.

Thus for a 1 kg mass, Inertia = 1 × g

For a 4 kg mass, inertia = 4 × g

The inertia of a 4 kg mass is four times as great as a 1 kg mass.

The inertia of a 1-kilogram mass, the inertia of a 4-kilogram mass is - D. 4 times as great

Inertia is the property of matter that resists changes in motion. Mass is the quantitative matter of motion.

Thus, the inertia of a 1-kilogram mass, the inertia of a 4-kilogram mass is - D. 4 times as great.

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Answer:

bird feeder, terrarium, bottle top bag seal, piggy bank, watering containers, hanging baskets

Answer: The receptors are highly specific.

Explanation: yes

Answer:The receptors are highly specific

Explanation:

just took the quiz :)

Answer:

Substance B

Explaination: Density is a measure of how heavy something is compared to its size. If an object is more dense than water it will sink when placed in water, and if it is less dense than water it will float. Density is a characteristic property of a substance and doesn’t depend on the amount of substance.

Answer:

false

Explanation:

some don't

Answer:

FALSE

gases and solids and liquids all have very different properties, thats not even mentioning plasma and BEC

Explanation:

thanks for the opportnity sir

Answer:

medicine................

Answer:

a. agriculture

b.cleanliness

d. medicine

Explanation:

took the test! :)

Northern blotting is the least likely to be used in identifying transcription factor binding sites. Therefore, option "B" is correct. Northern blotting is used for the analysis of RNA in the given sample. The samples can be tissue, blood, and serum.

The RNA is purified from the given sample. The sample might contain fragmented RNA which is purified and amplified. The target RNA is separated by using an electric current. The RNA moved through the gel which act like a sieve-like matrix. The movement of the fragments depends on the size of the fragments. Smaller fragments move faster than larger ones in Northern blotting.

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Answer:

Explanation:

For the 1st one with the Cheetah: It would be a long tail because it helps them balance when they turn. Sinch Cheetahs move extremely quickly they need a balance to ensure they don't topple over when they turn, this tail provides this balance.

For the 2nd one with the bear: Thick coats on a bare will help provide warmth whenever they go to hybernate. Thin fur would leave room for freezing and wouldn't be able to help them maintain the proper body temperature.

The 3rd one with the clownfish: A round tail provides a bigger boost when swimming since it is able to push more water. A forked tail would create a gap when they swim so they would have to expend more energy than with a round tail.

The 4th one with the Finch: Since grubs live underground a thinner beak would be able to dig them out and stab them faster. This allows them to reach farther and get more food.

Answer:

D AZ FCSDF SDF F

Explanation:

just seeing how this works don't mind me

Answer: Natural selection is based on the adaptive characteristics of animals. Artificial selection is based on the desirable characters selected by humans. Only beneficial or favorable traits are inherited over the successive generations by natural selection. Natural selection is performed on all the types organisms; Artificial selection is processed on some selective organisms of humans desires. ... Natural selection results in the transformation of the entire population of a species; Artificial selection brings out the new variety of that species.

Explanation:

Answer:

answer in explanation

Explanation:

Natural selection occurs over a long period of time and happens naturally. artificial selection happens relatively fast and occurs when humans choose a certain trait they like and help the animal with that trait reproduce.

Answer:

Guanine

Explanation:

There are four nitrogenous bases in DNA, two purines (adenine and guanine) and two pyrimidines (cytosine and thymine)

Adenine always bonds with thymine, and cytosine always bonds with guanine.

Answer:

Examination of vertebrate embryos reveals that during corresponding stages of early development,

the embryos appear to be very similar. For example, all vertebrate embryos pass through stages in

which they have gill pouches. The pouches eventually develop into the gill apparatus in fish; in laterevolving vertebrates that do not have gills, the gill pouches undergo further refinement and develop

into structures associated with the head and neck. Similarly, all early vertebrate embryos have tails,

which persist in some animals but regress during the later stages of development of humans. Thus,  

the individual development of an animal occurs through a series of stages that paint a broad picture

of the evolutionary stages (phylogeny) of the species to which it belongs.

"Ontogeny recapitulates Phylogeny", Haeckel

Explanation:

sure po ito

Examination of vertebrate embryos well-known shows that in corresponding levels of early improvement, the embryos appear very similar.

These scientists claimed that ontogeny recapitulates phylogeny (ORP). This word shows that an organism's improvement will take it thru every one of the personal levels of its evolutionary history, or its phylogeny.

Thus, the man or woman improvement of an animal happens thru a chain of levels that paint an extensive picture of the evolutionary levels (phylogeny) of the species to which it belongs.

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If biofilm formation is observed on the negative control slide, it could be due to either leaving the slide to incubate for too long (Option A) or using non-sterile slides or filter paper (Option C).

In biofilm experiments, the negative control is expected to show no biofilm formation since it does not contain the target microorganisms or conditions necessary for biofilm growth. If biofilm is observed on the negative control slide, it suggests that something went wrong during the experimental procedure. Option A suggests that the slide was left to incubate for too long, allowing unintended microbial growth and biofilm formation. Option C suggests that non-sterile slides or filter paper were used, introducing microorganisms or contaminants that can form biofilms. Both scenarios result in the presence of biofilms on the negative control slide, indicating a procedural error or contamination issue.

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The ability to recognize, respond to, and remember a variety of pathogens.

Answer:

Ants and bees

Explanation:

The most commonly known animals known to reproduce asexually are invertebrate animals such as aphids, flatworms, hydra, Bdelloid rotifers, ants, bees, parasitic wasps, coral and starfish

The most serious drawback to using library screening to study genetics is that it can result in the identification of gene fragments that are not in the correct orientation or order.

Library screening is a procedure that allows researchers to isolate clones that express a specific protein or contain a specific gene. A genomic library or a cDNA library may be used for this technique.

The other disadvantages of library screening are given below: Library screening, when compared to PCR, is a relatively time-consuming and labour-intensive process. Library screening's capacity to recover a specific gene is highly dependent on the library's quality, complexity, and redundancy. A library may lack certain sequences that are required to discover the gene of interest.

There may be errors or ambiguities in the data collected by the researchers. In a library, the sequences discovered may not necessarily be the most significant for research purposes.

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Answer:other dude is correct gimme brainlest

Explanation:

Answer: plant/science- Agronomist.

Floral designer.

Biotechnologist.

Plant journalist.

Field advisor.

Soil scientist.

Greenhouse manager.

Propagation scientist.

horticulture- plant breeding, genetic engineering, landscape design, farming, floral design, research, nursery production, education, food science, landscape construction and management, pest control, marketing

Explanation:

Okazaki fragments are associated with the lagging strand that demonstrates discontinuous nucleotide synthesis. These fragments are synthesized in the 5' to 3' direction.

During DNA replication, the lagging strand is synthesized in short, discontinuous fragments known as Okazaki fragments. This is because DNA polymerase can only synthesize DNA in the 5' to 3' direction. On the lagging strand, synthesis occurs in the opposite direction of the replication fork movement, resulting in the need for Okazaki fragments. These fragments are initiated by RNA primers that provide a starting point for DNA synthesis. DNA polymerase then elongates the fragments in the 5' to 3' direction, away from the replication fork. The fragments are eventually joined together by DNA ligase to form a continuous strand.

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Answer:

Both realized niche and fundamental niche are similar in size.

Explanation:

If Chthamalus’ and Balanus’ respective niches were a result of niche differentiation so we can say that Chthamalus’ realized niche is not smaller than its fundamental niche. It will be of the same size because of no interspecific competition with Balanus. The whole fundamental niche is considered the niche of the Chthamalus' alone due to no competition with Balanus' for resources present in the ecosystem.

Structure that suspends the small intestine from the posterior body wall and valve controlling food movement from the stomach into the duodenum

1. k. lesser omentum, 2. m. microvilli, 3. o. Peyers patches, 4. C. round folds, 5. v. tongue, 6. d. throat, 7. a. rear-end, 8. r. rugae, 9. h. haustra, 10. I. ileocecal valve, 11. j. digestive organ, 12. p. pharynx, 13. e. frenulum, 14., q. pyloric sphincter, 15. n. oral vestibule, 16. b. reference section.

17. f. more noteworthy omentum, 18. u. stomach, 19. 1. structure that suspends the small digestive system from the back body wall, 20. 1. structure that suspends the small digestive system from the back body wall, 21. 9. hard sense of taste, 22.

23. bone-upheld anterosuperior limit of the oral cavity, 23. 9. pocketlike sacs of the digestive organ, Segment A gives distinct explanations about different physical designs and works, while section B contains the comparing replies.

For instance:

- The design that suspends the small digestive system from the back body wall is replied by 1. structure that suspends the small digestive tract from the back body wall, which relates to the lesser omentum (k).

- Fingerlike augmentations of the gastrointestinal mucosa that increment the surface region for retention are replied by microvilli (m).

- Enormous assortments of lymphoid tissue found in the submucosa of the small digestive system are Peyers patches (o).

- Profound folds of the mucosa and submucosa that expand totally or somewhat around the boundary of the small digestive system are round folds (C).

By coordinating the things in segment A with the comparing depictions in section B, the connections between the physical designs and their capabilities can be perceived.

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B. Antibiotics attack only bacteria.