The finches that darwin studied differed in the shape of their beaks. according to darwin, which of these best describes these finches?

Answer:

The thermal energy of the Earth remains from its formation and is continuously generated from radioactive decay of long-lived radionuclides in the Earths interior. The deeper the Earth layers the higher the temperature with the geothermal gradient of temperatures through the Earth’s crust on average as high as 25–30°C/km.

Explanation:

The thermal energy affect the earth's layers by forming a thermal gradient.

Thermal energy of the Earth:

Deep inside the earth the thermal energy is generated by the radioactive decay of long-lived radionuclides.

This creates a thermal gradient from core to surface of the earth. The temperature of the core is highest, then the manle is semi-solid or liquid.

The crust of the earth is solid and have relatively less temperature,

Therefore, the thermal energy affect the earth's layers by forming a thermal gradient.

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Hair plays an important role in our lives. The hair on our head keeps us warm and acts as a cushion for our skull. Hair appearance can also help form our identity and self-image, which makes hair loss very troubling.

Most hair disorders aren’t serious, but they are often considered major cosmetic issues that require treatment. Androgenetic alopecia is the most common form of hair loss, although there are a number of other hair conditions that can affect the scalp and other parts of the body.

Answer:

The easiest one to correct would most likely be Class V, since in this type of mutation, the only problem or abnormality is the production of insufficient amounts of the needed CFTR.

Explanation:

Mutation Classes

Class I - Gene contains a stop signal that prevents CFTR from being made.

Class II - CFTR is made, but does not reach the cell membrane

Class III - CFTR is made and in the right place, but does not function normally

Class IV - Channel does not move substances efficiently or at all

Class V - CFTR is made in smaller than normal quantities

The expected genotype ratio is 1:3.

The genotype of an organism is the sum total of the gens that the organism received from its parents. The genotype determines the traits of an organism (phenotype).

Let the dominant gene be R and the recessive gene be r then we have a cross between RR and Rr. The expected genotype ratio is 1:3.

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Answer:

Dewy Grass. Dew is a natural form of water, formed as water vapor condenses. ... This forces water vapor in the air around cooling objects to condense. When condensation happens, small water droplets form—dew.

so it's C

Explanation:

Answer:

1. dna needs to be replicated before mitosis so that the parent cell has the same amount of genetic material as the parent cell once it has split.

2. helicase is an enzyme that is so dna can unwind.

Explanation:

the explanation is in the answer.

I hope this helps!

Answer:

DNA must be replicated before mitosis so that both identical daughter cells contain the same amount of genetic material as the parent cell once it has split in two. Helicase is an enzyme necessary at the initiation of DNA replication to unwind/unzip the DNA so that this process may begin.

Answer:

1.Plant absorbing water from the soil.

Explanation:

Osmomsis occurs by the movement of a water from a region of higher concentration of water molecules to a region of lower concentration of water molecules, through a semi permeable membrane,

OR

It occurs as a result of movement of substance molecules from a region of lower concentration to a region of Higher concentration of the substance.

Note: The higher the concentration of the substance molecules,the lower the concentration of water molecules.

The movement of water into the roots of the plants from the soil demonstrates the most valid and accurate example of osmosis. Thus, the correct option for this question is A.

Osmosis may be defined as a type of process through which the movement of a solvent such as water takes place from a region of lower solute concentration to a region of higher solute concentration through a semi-permeable membrane.

The absorption of sugar into the blood from the gut is mediated by secondary active transport with the help of transporters like SGLT-1 and SGLT-2. The process through which water is evaporating from a leaf is known as transpiration. The process of entering oxygen into the blood from the lungs is known as diffusion.

Therefore, the movement of water into the roots of the plants from the soil demonstrates the most valid and accurate example of osmosis. Thus, the correct option for this question is A.

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Answer:

Apoptosis is an orderly process in which the cell's contents break down and are packaged into small packets of membrane for “garbage collection” by immune cells. It contrasts with necrosis (death by injury), in which the dying cell's contents spill out and cause inflammation. Apoptosis removes cells during development.

Apoptosis is a form of programmed cell death that occurs in multicellular organisms.

It is a  natural biological process of programmed cell death in which the cells destroy themselves and maintain the smooth function of the body parts.

There are two types cell death such as Programmed death of cells or apoptosis and uncontrolled death or Necrosis.

Apoptosis can occur via two pathway such as Extrinsic Pathway is triggered in response to external stimuli, ligand binding at death receptor and these receptors are called as Tumor Necrosis Factor gene.

Intrinsic Pathway triggered in response to internal stimuli such as biochemical stress, DNA damage and this pathway is modulated  Bax, and Bcl-2 molecules.

Apoptosis helps in maintaining homeostasis, proper size of the body, cell number, elimination of unwanted cell, T-lymphocytes etc.

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Answer:

P, F₁, and F₂

Explanation:

The parental generation is also known as P.  F₁ is the first generation and F₂ is the second generation.  

Answer: All organic compounds contain the elements carbon and hydrogen.

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Explanation:

Answer:

All organic compounds contain the elements carbon and hydrogen

Explanation:

Answer:

C

Explanation:

it was the time to f the dinosaurs and some of the dinosaurs were reptiles

Answer:

Rivers usually begin in upland areas, when rain falls on high ground and begins to flow downhill. They always flow downhill because of gravity. They then flow across the land - meandering - or going around objects such as hills or large rocks.

Explanation:

Hope this helps!

Answer:

A river is created when water moves from higher elevation to lower elevation. It usually goes downhill, and can join with other rivers. The river ends when it flows into an ocean.

I hope this helps!

Answer:

Forensic anthropologist

Explanation:

Forensics is a branch of science that deals with the solving of crimes. According to this question, police are investigating a series of murders in which the suspect is leaving little to no physical evidence such as DNA or fingerprint. However, strange pieces of typewritten poetry was found tucked into the victims’ pockets as evidence.

Based on this evidence found, a FORENSIC ANTHROPOLOGIST is the person that can give valuable insight to help the police identify the perpetrator and possible future victims. This is because ANTHROPOLOGY is a social science subject that deals with past events, hence, forensic anthropologists will be able to work on the typewritten poetry.

Answer: D.

Explanation: Members of the same species do not have the same number of cells. Think differences in height or weight. They do not have identical traits. Think siblings. They cannot create different species. Two wolves cannot make a coyote.

Answer:

rickettsia and viruses

Explanation:

This is because obligate intracellular parasite are parasite that affect humans and they grow, reproduce and survive inside the host cell. These parasite cannot live or survive outside host cell but they live inside host cell, replicate and they depend on the host cell resources i.e the use host cell resources thereby causing harm on the host cell. rickettsia and viruses are parasite that can only survive inside a living organism.

Answer:

rickettsia and viruses

Explanation:

Answer:

Sponges

Explanation:

Members of phylum Porifera are commonly known as sponges. They are generally marine and mostly asymmetrical animals. Spongilla is a fresh water sponge.

Answer:

Explanation:

Oxygen is needed to support life and some metabolic processes in microorganisms especially aerobic organism.

The presence of oxygen in the container gives them the opportunity to carry out there metabolic activities thereby enhancing there growth and multiplication.

Hence, to limit the growth of aerobic bacteria or fungi, and also to prevent the evaporation of volatile components that is available in the content oxygen is withdrawn this help extend the shelf life of the produce to be stored.

Answer: b

Explanation: I took the test

Cyanobacteria are important to the evolution and advancements of other life forms on Earth because they: B. produced oxygen from photosynthesis.

Cyanobacteria is scientifically referred to as Cyanophyta and it can be defined as a group of single-celled, prokaryotic photosynthetic bacteria that live in aquatic habitats (water) and moist soils.

Additionally, this division of microorganisms are capable of manufacturing their own food through a process known as photosynthesis, which typically leads to a release of oxygen into the ecosystem.

In conclusion, Cyanobacteria are very important to the evolution and advancements of other life forms on planet Earth because they help in the production of oxygen through photosynthesis.

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Answer:

herbivore

Explanation:

the word herbivore contains the word "herb" meaning plants

Answer:

Host Cell

Explanation:

Viruses cannot live on their own, and instead need to infect a/n Host Cell to replicate. The two primary life cycles of viruses are the lytic cycle, also known as the virulent cycle, and the Lysogenic cycle, also known as the temperate cycle.

Answer:

host cell

Explanation:

Answer:

Explanation:

The burning of fossil fuels releases greenhouse gases into the atmosphere, increasing levels of CO2 and other gasses, trapping heat, and contributing to global climate change. Coal combustion releases the greenhouse gases carbon dioxide (CO2) and nitrous oxide (N2O) during combustion. The major disadvantage of coal is its negative impact on the environment. Coal-burning energy plants are a major source of air pollution and greenhouse gas emissions. In addition to carbon monoxide and heavy metals like mercury, the use of coal releases sulfur dioxide, a harmful substance linked to acid rain.

Answer:

Air pollution

Can impact health of citizens like asthma, breathing difficulties, etc.

Can lead to death if not treated or fixed.

Releases greenhouse gases into the atmosphere.

Contributes to global climate change.

Answer:

d. all of the above are correct.

Answer:

1. Providing structure --> Collagen makes skin strong yet flexible.

2. Maintaining homeostasis --> Insulin controls the concentration of sugar in the blood.

3. Fighting Disease --> IgA prevents the buildup of viruses and bacteria in the gut.

4. regulating chemical reactions --> Pepsin works in the stomach to speed up the breakdown of food.