Help please?!!!???!????!??!??????????????!??!?!

Mollusks have soft bodies, and their bodies are not divided into rings like the segmented .Mollusks also have a hard outer shell to protect their bodies. These characteristics makes mollusks different from other animals.  

Four common characteristics that all mollusks share , are having soft bodies, a mantle, a visceral mass, and the foot.

The phylum Mollusca has many distinctive features and  special characteristics, which include a mantle cavity, visceral mass, foot, and radula.  Mantle is the cavity which is used for breathing and excretion purpose , radula is longue like structure that helps in sensory and food grasping purpose. Mollusks also includes various classes like Gastropod, Bivalvia, Cephalopoda, and Polyplacophora .

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Answer:

A keystone species is an organism that helps define an entire ecosystem. Without its keystone species, the ecosystem would be dramatically different or cease to exist altogether.

Hope that helps! :)

-Aphrodite

Explanation:

Answer:

HIV may not cause symptoms early on. People who do have symptoms may mistake them for the flu or monoSkin rash.

Symptoms may appear from a few days to several weeks after a person is first infected. The early symptoms usually go away within 2 to 3 weeks.

HIV (human immunodeficiency virus) is a virus that attacks the immune system

There are two types of HIV:

HIV-1, which causes almost all the cases of AIDS worldwide

HIV-2, which causes an AIDS-like illness. HIV-2 infection is uncommon in North America.

Explanation:

Answer:

the different phases of the moon are proof that it revolves around the earth at the rate it does, so if it revolved around earth much more slowly, then the phases wouldn't be visible because the sun wouldn't hit the moon as it does now

Explanation:

i don't know why this is being taught who cares about the moon

The hot springs of Geyser Basin in Yellowstone National Park are a great place to observe the growth of thermophiles. Thermophilic microorganisms can live in very hot water. This statement is true.

The term "thermophile" refers to bacteria that can grow at temperatures up to 55°C (minimum 45°C, optimum temperature range 55-65°C, maximum 80°C). Hyperthermophiles (extreme thermophiles) are microorganisms that can grow at temperatures as high as 113°C, ideally 80°C. Examples include Bacillus stearothermophilus, Thermoplasma acidophilus, and Thermus aquaticus.

Hot springs are often home to microbial communities adapted to life in hot, mineral-rich waters. Oxygen and light levels are lower in hot springs. Almost all hot springs and geysers are home to thermophilic bacteria.

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Answer:

D. cell, tissue, organ, organ system, organism

Explanation:

also before cells there are also (and in order) atoms, molecules, organelles

(have a great day!)

;)

The statement "Water molecules move into and out of cells through the cell membrane by active transport" is definitely false.

Active transport may be defined as a type of transport that significantly occurs against the concentration gradient and is mediated with the help of carrier proteins. In this type of transport, metabolic energy is utilized in order to migrate ions or molecules against a concentration gradient.

Water molecules throughout the cell are mediated by the process of diffusion where ions are molecules that generally migrate from the region of higher concentration to the lower concentration through a semi-permeable membrane.

Some examples of active transport include the passage of sodium and potassium ions through the sodium-potassium pumps.

Therefore, the statement "Water molecules move into and out of cells through the cell membrane by active transport" is definitely false.

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Great minds think alike! I also think the golden one is the best choice.

Go for it!

Answer:

Three examples of fossil fuels are:

1). Petroleum

2). Coal

3). Natural gas

Light energy is captured in the process of photosynthesis which stores the energy in organic molecules to be used in the process of respiration.

This is referred to as the process in which green plants manufacture food in the presence of sunlight which is stored in the molecular bonds of organic molecules such as sugars.

It is used during the process of respiration by cells of the body and it involves the production of energy from the oxidation of complex organic substances as result of the body taking in oxygen and giving off carbon dioxide which is therefore the reason why they were chosen as the correct choices.

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Ded by a DNA sequence called as a repressor. A repressor is a DNA sequence that activates expression.

Explain protein. Protein makes up the majority of the body's organs, tissues, and body parts, include muscle, bones, skin, and fur. It helps to produce enzymes, which power countless chemical reactions, and hemoglobin, which carries oxygen in the blood.

Protein is an essential part of the processes that give you energy and enable your blood to carry oxygen throughout your body. In addition, it encourages the creation of antibodies that fight off illnesses and infections, keeps

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Natural selection, genetic drift, and gene flow are mechanisms that cause changes in allele frequencies over time, contrary to the Hardy-Weinberg assumption, and evolution occurs.

Evolution refers to changes in the genetic composition of a population of organisms over time. There are four forces that work together to effect evolution: mutation, natural selection, genetic drift, and gene flow. First, natural selection is a mechanism by which organisms with beneficial traits become more likely to inherit those traits, increasing the population of the next generation.Genetic drift results from random changes in allele frequencies. , these changes may restore or promote genetic diversity. Gene flow is the exchange of genes between populations by migration or mating, which can introduce new alleles and introduce genetic variation into populations. Ultimately, mutation produces genetic variation by spontaneously forming new alleles.

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The purpose of this experiment is to separate the pigments to identify each pigment by their color properties and how far they travel using paper chromatography is the goal of the experiment separation of pigments by paper chromatography.

Paper chromatography is a separation method in the form of color propagation that can be seen on the chromatography paper and the spots that are there to compare the spots from the sample and the spots from the standard.

Filter paper in paper chromatography is used as a stationary phase in the separation process. The selection of filter paper used is one of the determining factors for success in chemical separation and analysis. So in paper chromatography experiments the dyes will be distributed, so that the pigments can be easily separated and identified based on their color properties.

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Answer:

B

Explanation:

So lets go over facts of mieosis and mitosis:

Meiosis is sexual reproduction

Mitosis is asexual reproduction

Meiosis in animals is how they reproduce

Mitosis in animals is how they regenrate their cells

Mitosis copies the orgninal cell.

Meiosis mixes a male and female egg and sperm to form a zygote

Ok, knowing this. We can find our answer.

Since we know meiosis is sexual, and mitosis asexual, we can get rid of C.

We also know that meiosis is in animals, and so is mitosis, so we can get rid of A.

Finally we can get rid of D, since we know due to the male and female genetics(and through the swapping of chromesomes during prophase)that genetic variation occurs in meiosis, but since mitosis copies a single cell, it is not genetically varient.

So the answer must be C, which states that Mitosis has genetically identical cells, while mieosis does not.

Hope this helps! ;)

Kelp forests are a very important ecosystem in marine waters by supporting important biodiversity. These kelp forests are threatened by all of the following except presence of large predators.

Kelp forests are an incredibly important marine ecosystem that provide a variety of benefits to the surrounding environment. They are a prime source of habitat and food for a large variety of species, including fish, invertebrates, and even certain species of seabirds. In addition, kelp forests also act as a type of buffer, protecting coasts from erosion and providing habitat for juvenile fish, which helps to maintain coastal fish populations. Unfortunately, kelp forests are threatened by many factors, including overfishing, pollution, and climate change.

The one factor that does not threaten kelp forests is the presence of large predators. While large predators can have a significant impact on the overall structure of a kelp forest, they are not directly responsible for the decline and destruction of kelp forests. For example, while sea otters, seals, and sea lions can have a significant impact on kelp forests by over-browsing, they are not the cause of the decline in kelp forests.

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Answer:

D. The cell then has a larger surface area to volume ratio which means it can move nutrients into the cell and waste out more efficiently.

Explanation:

Three vegetarian choices for protein includes Grains and pulses, Dairy products and Soya and tofu.

Protein for vegetarians include beans, peas, and lentils, nuts and seeds and soy products. Protein is one of the most essential nutrients for daily life , as they are required to help your body repair cells and make new ones. Protein also plays crucial role in growth and development in children and expecting mothers .

In general , proteins are required for the repairing and building your body's tissues, They also allows metabolic reactions to occurs at place for easy body function . Hence , vegetarians should include protein from variety of protein sources to ensure proper body functioning .

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Answer:

Small core, 30 coils

Explanation:

That's what the bar graph says

Brainliest pls!

Answer:

the first circle the 30 small coil

Explanation:

Answer:

The answer is A. decreased prevalence of disease

Answer:

UGU-AAA-GUC-UGG-CAG

Cys, Lys, Val, Trp, Gln

Explaination:

Apples Under Trees

That sentence will make sense in a second,

A(Adenine) goes with T(Thymine)

G(Guanine) goes with C(Cytosine)

Ex: CAT

->GTA

That's DNA's complementary DNA sequence.

For DNA converting to RNA

(Where Apples Under Trees comes in)

T(Thymine) will be replaced with U(Uracil)

Ex: CAT

->GUA

Codon chart:

For the codon chart, I like to use the circle one.

Steps:

We will be finding the sequence GUA :)

1. Find the first FOUR boxes in the middle. (Color Coded tan)

We have G first, so go on to the next section.

(as you can see the codon chart is split into four sections)

2. Find the next letters (Color coded light green) and find U because that's the letter after G.

3. Find the next letters (Color coded white) and find the amino acid the letter matchs to.

If you got VAL you did it correctly :)

Answer:

ATGGCTAACGT so D

Explanation:

because in DNA adenine always pairs with thymine and Cytosine with Guanine. you can also remember them as Apple Tree and Car Garage.

Answer: D

Explanation: Every other  choice can be changed with environment and other factors but DNA can effectively compare organisms.

The specific colors of light that a leaf reflects depend on the pigments present in the leaf. Chlorophyll, which is the pigment primarily responsible for the green color of leaves.

leaf reflects green light and absorbs other colors of the visible spectrum such as blue and red. Carotenoids, which are pigments that give leaves their yellow and orange colors, leaf reflects yellow and orange light. And finally, anthocyanins which are pigments that give leaves their red, purple and blue colors, leaf reflects red, purple and blue light. Additionally to these pigments, other substances on the leaf surface can also affect the light leaf reflects. It's worth noting that while leaves reflect visible light, they also reflect other types of light such as near-infrared and ultraviolet, but these are not visible to the human eye.

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Explanation:

10

please mark me brainliest if it helps you then plzz

Answer:

The correct answer is actually 100x weaker.

Explanation:

They have energies of 1–3 kcal mol-1 compared to roughly 100 kcal mol-1 for a carbon-hydrogen covalent bond.

Primary methods of confirming endotracheal tube placement within the trachea is Demonstration of exhaled carbon dioxide (CO2) and a rapidly increasing heart rate.

Endotracheal intubation can be done either as an emergency procedure (e.g., for diaphragmatic hernia, severe airway anomalies, failure of mask ventilation, prolonged ventilation, endotracheal tube (ETT) change, or instillation of surfactant) or as an elective or semi-elective surgery.

Chest radiography can be used to validate ETT location, but this procedure is sometimes delayed. As a result, a number of quick point-of-care techniques to verify proper tube placement have been developed, including clinical symptoms, exhaled CO2, respiratory function monitors (RFMs), and ultrasound.

Radiology of the chest The proper tube position within the trachea, which should be just below the level of the vocal cords and significantly above the carina, can be confirmed using a chest radiograph. Before X-ray confirmation, various methods have been documented to place the tube over the carina.

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Answer:

B

Explanation:

need to know this to explain what you know on the central idea of the story.

Answer:

d. proteomics i think

Explanation:

Omics technology requires reverse transcriptase in the filed of proteomics. Thus, the correct option is D.

Omics technologies are the field of science which primarily aims at the universal detection of genes which is genomics, transcriptomics in the detection of mRNA, proteomics for the detection of protein, and metabolomics for the detection of metabolites in a specific biological sample. Omics technologies have a broad range of applications in research.

Omics technologies aim at the collective characterization and quantification of the pools of biological molecules and samples that translate into structures, functions, and dynamics of an organism or a group of organisms.

Therefore, the correct option is D.

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Answer:

I don't think it is becoming the predator lunch. there are some birds who will clean the teeth

Answer: Body imbalance such as affect balance and hearing.

Explanation: