PLEASE ANSWER I NEED HELP

Answer:

Answe

Explanation:

A limited factor that causes adaptation is the loss of habitat,food,or new species.

Answer:

1.) stromatolites

2.) photosynthesis

3.) Ordovician

4.) Cambrian

5.) oxygen

6.) As Earth cooled, carbon dioxide dissolved in the early ocean. Cyanobacteria consumed carbon dioxide and converted it to oxygen. Methane was removed from the atmosphere as oxygen was produced, eventually leading to the Cambrian Explosion.

7.) Metabolic processes that use oxygen produce more energy than anaerobic metabolism. Simple diffusion of oxygen would limit the size of a multicellular eukaryote, but animals evolved ways to transport oxygen to their tissues, which permitted an increase in size.

Explanation:

From Penn

Answer:

1. stromatolites  

2. photosynthesis  

3. Ordovician  

4. Cambrian  

5. oxygen  

6. As Earth cooled, carbon dioxide dissolved in the early ocean. Cyanobacteria consumed carbon dioxide and converted it to oxygen. Methane was removed from the atmosphere as oxygen was produced, eventually leading to the Cambrian Explosion.  

7. Metabolic processes that use oxygen produce more energy than anaerobic metabolism. Simple diffusion of oxygen would limit the size of a multicellular eukaryote, but animals evolved ways to transport oxygen to their tissues, which permitted an increase in size.

Explanation:

Just did it on Penn Foster

Answer:

Kinetic energy of dodgeball = 16 kg-m/s

Explanation:

Given:

Mass of dodgeball = 2 kg

Velocity of dodgeball = 4 m/s

Find:

Kinetic energy of dodgeball

Computation:

Kinetic energy = (1/2)(m)(v²)

Kinetic energy of dodgeball = (1/2)(Mass of dodgeball)(Velocity of dodgeball²)

Kinetic energy of dodgeball = (1/2)(2)(4²)

Kinetic energy of dodgeball = (1/2)(2)(16)

Kinetic energy of dodgeball = (32/2)

Kinetic energy of dodgeball = 16 kg-m/s

Reproductive isolation is a mechanism through which species do not get to interbreed. Option D. reproductive isolation

This is a mechanism through which different species or populations do get to mate and produce fertile offspring. This mechanism allows the accumulation of genetic differences and favors speciation.

There are different barriers that inhibit or interrupt the genetic flow between different species.

Reproductive barriers prevent mating between two or more species. There are two types of barriers,

Pre-copulatory o pre-ziygotic:

• Ecological or by habitat isolation;

• Seasonal or temporal;

• Séxual o ethologic;

• Mechanic;

• Gametes incompatibility.

Postzygotic mechanisms or barriers include

• Hybrid inviability,

• Hybrid sterility,

• Cytoplasmic interactions.

In the exposed example occurs a seasonal difference between the mating period of the eastern spotted skunk and the western spotted skunk.

Probably, if both of them would mate during the same season and in the same area, they could reproduce.

However, since their mating season differs, individuals from each species do not get to cross and hence, produce fertile offspring.

Option D. reproductive isolation is what most likely prevents these two species from interbreeding

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Answer:

La reproducción sexual consisten en la unión de dos gametos uno femenino y otro masculino, para formar un nuevo individuo con características provenientes de ambos progenitores. Los gametos son células especializadas que se forman por un proceso meiótico y tienen en su núcleo la mitad de la información genética de un organismo, por lo que reciben el nombre de células haploides de manera que cuando se une sus cromosomas se forman células diploides característico de la especie. La característica más importante de este tipo de reproducción es la variación genética que implica que los descendientes tengan características de sus dos progenitores, por lo que son diferentes a ellos. El proceso en el que se une las células sexuales se le conoce como fecundación. En los animales esta pude ser interna o externa.

Explanation:

Los gametos (óvulos y espermatozoides) son células germinales especializadas que se desarrollan a partir de un proceso llamado gametogénesis (espermatogénesis en machos y ovogénesis en hembras). El proceso de gametogénesis implica un tipo de división celular llamado 'meiosis' donde la cantidad de cromosomas se reduce a la mitad. En humanos, el número cromosómico diploide (2n) de 46 cromosomas se reduce a un número haploide (n) de 23 cromosomas. La fecundación es el proceso por el cual los gametos se fusionan durante la reproducción sexual para producir un cigoto diploide. En la reproducción sexual, el aumento de la variación genética en la progenie es un resultado de tres procesos diferentes: la unión aleatoria entre gametos durante la fecundación, la distribución independiente de los cromosomas durante la gametogénesis y el entrecruzamiento (recombinación o crossing over) entre cromátidas de cromosomas homólogos durante la meiosis. Finalmente, en animales, la fecundación puede ser interna, la cual se produce mediante la unión de los gametos dentro del cuerpo de la hembra (por ejemplo, gallina, leona, cebra, etc.), o fecundación externa, donde la fusión de gametos se produce en el ambiente externo (por ejemplo en peces, sapos, ranas, etc.).

Answer:

One of the largest environmental effects of human population growth is the problem of Global warming.

Economic development, urbanization, energy consumption, transportation/motorization due to rapid population growth are major driving forces of air pollution in large cities.

In order to support the growing population, forests are being destroyed at an alarming rate. Deforestation occurs when humans clear forests to use the land either for agriculture or for habitation. This leads to soil erosion and the extinction of plant species. Land animals also decline in numbers and even face extinction due to human expansion that encroaches on their natural habitat and limits their ability to spread geographically.

Humans also continue to put a great demand on the natural resources of our planet. Many non-renewable resources are being depleted due to the unrestrained use of fuel and energy. Many parts of the world also suffer from a shortage of food and water.

The growth of the population puts larger demands on our already limited resources. The environment on earth is suffering from the growth of the global population. The depletion of resources and biodiversity, the production of waste, and the destroying of natural habitat are serious problems.

Explanation:

sorry it is so long but here u go plz leave a like and a rating and brainliest

The direct result of human population growth include consequences such

as pollution.

Increase in human population has led to an increase in industries and

use of automobiles which emits different gases which are harmful. They

deplete the ozone layer and cause global warming with incidences of

sunburns while others cause respiratory diseases such as asthma etc.

it has also resulted in overcrowding and reduced fresh oxygen due the

structures for different purposes.

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Answer:

C

Explanation:

i go to flvs too, also, good luck on FSA

A student made a table to show information about the physical structures and organs of birds. The statement which best describes how to correct an error in the table is the ovaries produce the eggs. The correct option is C.

Birds are the warm-blooded animals. Their forelimbs are generally modified into wings. They have a well-developed flight muscles which help during the flight of bird. Their hind limbs are adapted for the purpose of walking, hopping, perching, grasping, wading and swimming.

The ovaries produce the eggs. The ovaries are responsible for producing eggs in birds. Therefore, if there is an error in the table that incorrectly identifies the function of the ovaries, it is important to correct it by stating that the ovaries produce the eggs.

Therefore, the correct option is C.

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Answer:

Both players on the serving doubles team have the opportunity to serve and score points until they commit a fault *(except for the first service sequence of each new game).

The first serve of each side-out is made from the right-hand court.

If a point is scored, the server switches sides and the server initiates the next serve from the left-hand court.

As subsequent points are scored, the server continues switching back and forth until a fault is committed and the first server loses the serve.

When the first server loses the serve the partner then serves from their correct side of the court (except for the first service sequence of the game*).

The second server continues serving until his team commits a fault and loses the serve to the opposing team.

Once the service goes to the opposition (at side out), the first serve is from the right-hand court and both players on that team have the opportunity to serve and score points until their team commits two faults.

In singles the server serves from the right-hand court when his or her score is even and from the left when the score is odd.

Explanation:

Answer: A. Insecticides and herbicides can potentially contaminate foods.

Answer:

the answer is A

Explanation:

edge 2021

Answer:

usually straight, wither dark brown or black, fastest growth rate.

Explanation:

Answer:

Its like people with straight or curly with it being black, or brown, or probly like blonde

Explanation:

HOPE HELPS !!! :D

Answer:

Arthropods

Explanation:

Robber crabs belong to the Phylum Arthropoda of the invertebrates in the Kingdom Animalia.

Answer:

c i had that before its c

Explanation:

Answer:

Cells make up tissues, tissues make up organs, and organs make up organ systems. The function of an organ system depends on the integrated activity of its organs. For instance, digestive system organs cooperate to process food.

Explanation:

Answer: 5.000/ml

Explanation: density = mass/volume= 50/ 100=1/2 or 0.5 g/ mL

Answer:

it's the second one/B because it's the only one that is correct :)

Answer:

1- Ans:Molecules

2- Ans:Atoms

Answer:

The answer is gravity.

Answer: The arrangements and correct order of the above described genetic and behavioural adaptations includes:

A.) Camouflage: This is a survival adaptation by which an animal blends in and is hidden in its surroundings.

B.) Mimicry: This is an organism exhibiting characteristics similar to one known to be dangerous.

C.) Tropism: This is the growth or movement of an organism ( usually plant) in response to a stimulus.

D.) Venom: This is a poison secreted by animals for either defensive or offensive purposes.

E.) Mutualism: This is the interaction of two organisms where both benefits.

F.) Commensalism: This is the interaction of two organisms where one is helped and the other is neither helped nor harmed.

Explanation:

In the study of organisms and it's environment, they are able to adapt through genetic and behavioural mechanisms. Adaptation of defined as the ability of organisms to become fitted to its environment by modifying or changing its features. These features may be structural or behavioural.

STRUCTURAL ADAPTATION: Almost every part of the body of a living organism is structurally adapted to its mode of life. They are structurally adapted for the following specific functions:

--> Escape and defence: many animals use CAMOUFLAGE to remain unnoticed by potential predators. While some others are capable of producing poisonous VENOMS which may become offensive to the predators. Also many harmless organisms may possess structural behaviours that may MIMIC dangerous organisms thereby keeping their predators at arms length.

--> obtaining food: organisms needs to possess some structural features that will enable them obtain food in their environment. This usually leads to forming various feeding relationship ( which may be MUTUALISTIC or COMMENSALISM) with one another to be able to obtain food for survival.

BEHAVIOURAL ADAPTATION: Behaviour is everything an organism does in response to changes in its environment. Plants do exhibit behavioural adaptations and a typical example is the phototrophic movement of plant shoots which is a type of TROPISM.

Answer:

I think four body system is Muscular, immune, nervous, respiratory.

Explanation:

Answer:

daddy ;-0

Explanation:

Answer:

Your Answer is B

Explanation:

By burning coal and fossil fuel and  natural gas, it causes in the air

Answer:

True

Explanation:

Yes it is since it intrigues to reader to go deeper into your research paper. In addition, it also gives you good dialoge for what you write/say next.

Answer:

- This process is caused by spontaneous hydrolysis of a glycosidic bond: depurination and deamination

- This process is induced by ultraviolet light:  pyrimidine dimer formation

- This can happen to guanine but not to cytosine: depurination

- This can happen to thymine but not to adenine:  pyrimidine dimer formation

- This can happen to thymine but not to cytosine: none

- Repair involves a DNA glycosylase: deamination

- Repair involves an endonuclease: depurination, deamination and  pyrimidine dimer formation

- Repair involves DNA ligase: depurination, deamination and  pyrimidine dimer formation

-  Repair depends on the existence of separate copies of the genetic information in the two strands of the double helix: depurination, deamination and  pyrimidine dimer formation

- Repair depends on cleavage of both strands of the double helix: none

Explanation:

Depurination is the loss of purine bases (either adenine or guanine), while deamination refers to the removal of an amino group. During depurination, a β-N-glycosidic bond is cleaved by hydrolysis and a nucleic base is released (either adenine or guanine). All DNA bases may undergo deamination, except thymine (since thymine does not have an amino group). The ultraviolet (UV) radiation can cause thymine or cytosine to form dimers (e.g., pyrimidine dimers), being thymine dimers the most common lesion when DNA is exposed to UV light. Pyrimidine dimers may be repaired by different excision mechanisms, e.g., nucleotide excision repair, where the recognition of the DNA damage leads to the removal of the DNA fragment containing the lesion. DNA glycosylases are enzymes involved in the mechanism of base excision, these enzymes recognize and remove damaged bases by hydrolysis of the glycosidic bond, producing an abasic (apurinic and apyrimidinic) site. A DNA ligase enzyme covalently joins two DNA molecules by forming a phosphodiester bond, which is required during these processes.

Answer:

Option A

Explanation:

Thyroid is primarily caused by lack of iodine but there are other reasons as well that lead to increased size of the thyroid gland. Some of these reason is

a) over- or underproduction of thyroid hormones

b) Nodules in the glans

Some times, due to overstimulation immune system itself attack the thyroid gland thereby producing excess thyroxine and hence causing  the thyroid to swell

Thus, Option A is correct

Answer:

Because a stationary front marks the boundary between two air masses, there are often differences in air temperature and wind on opposite sides of it. The weather is often cloudy along a stationary front, and rain or snow often falls, especially if the front is in an area of low atmospheric pressure.

Answer:

They raise LDL and lower HDL

Explanation:

HIV came become AIDS (acquired immunodeficiency syndrome) if not treated.