what are pheromones?
1. mating behaviors
2. changes in appearance
3 . chemical signals
4. patterns of behavior

Answers

Answer 1
3. chemical signals!

hope that helped :)
Answer 2

Chemical signals - natures love potion ;)


Related Questions

How do the functions of the skeletal system relate to muscular system functions

Answers

For bones to function, they need muscles and for muscles to function, they need bones.

Answer:bones provide structure and support the body while muscles move the bones

Explanation: the skeleton is the main part of the body holding everything up without it we would be jelly pretty much. And then our muscles and ligaments are connected to our bones. Example: lifting your forearm up to touch your shoulder takes our muscles to lift our bones but our bones keeps our arm to have structure and not flop around

Which of the following statements is true about the structure of the cell membrane?

Answers

Hello,

Here is your answer:

The proper answer to this question is option C "The proteins that make up the two layers are not identical".

Here is how:

The cell membrane looks like two layers but both of them are no identical to each other.

Your answer is C.

If you need anymore help feel free to ask me!

Hope this helps!

HELLPP PLLEAASE I GIVE ~BRAINLIEST~ !!! PLEASE HELP ME!!!!!!

The Hindenburg could fly because the hydrogen that filled it was “lighter than air.” Yet, hydrogen is incredibly flammable. Describe your own design for the ideal air transport machine.

Answers

(I don't know if this is right) Being lighter than air relates to density. There are also other noble gas elements with density lighter than air, such as helium. I would fill it with helium and regulate the amount due to the air pressure and altitude wanted/needed. This could be a good response for a middle school course, but if you need an extended response, then provide some scientific terms too.

Instead of hydrogen, my ideal air transportation system would lift the airplane using a non-flammable gas, such as helium. In addition to being lighter than air, helium does not have the same flammability hazards as hydrogen.

What is an ideal air transportation machine?

Depending on the particular needs and preferences of people or organizations, the concept of an ideal air transportation may change. However, there are several broad properties that can be considered ideal in an ideal air transport system, such as:

Safety is the first priority in all forms of transportation, and the ideal aircraft should have strong safety measures and procedures in place to reduce the likelihood of accidents or disasters.

Efficiency: An ideal aircraft should be economical with its use of fuel, maintenance and operation. It should also be able to carry cargo or passengers safely and quickly.

Comfort: To offer a pleasant experience for passengers, the ideal air transportation vehicle should include comfortable seating, plenty of legroom, and climate control systems.

Therefore, instead of hydrogen, my ideal air transportation system would lift the airplane using a non-flammable gas, such as helium. In addition to being lighter than air, helium does not have the same flammability hazards as hydrogen.

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the group of organisms that can be larger than a kingdom is called a a. domain b. phylum c.species d. class

Answers

The right option is a. domain
The group of organisms that can be larger than a kingdom is called a domain. A domain is the highest taxonomic rank of organisms in the three domain system of taxonomy. Kingdom is the second highest taxonomic rank, under domain. The tree of life consists of three domains which are Archaea, Bacteria, and Eukarya. The group of organisms under the domain Archaea and Bacteria are all prokaryotic (single celled) microorganisms whose cells has no nucleus while the group of organisms under the domain Eukarya are multicellular organisms whose cells has a nucleus and membrane-bound organelles. 

Answer:

a. domain

Explanation:

Domain is the largest group of organisms. Domain is super kingdom which holds the highest taxonomic rank when it comes to categorize animals. An American microbiologist named Carl Woese et.al. proposed it in 1990.

The three domains are mentioned as under:

1) Bacteria

2) Archaea

3) Eukarya

The organisms in the three domains are classified on the basis of the kind of lipid structure in their plasma membrane, the nucleotide sequences on the rRNA of their cells and their sensitivity towards various antibiotics. The Bacteria and  Archaea domians comprise prokaryotic organisms whereas Eukarya domain comprises eukaryotic organisms.

After domain it is kingdom which is the second largest group of organisms in taxonomy.

Why is something that is a danger to coral also a danger to other species?
Question 3 options:

a. Coral provide a habitat for many marine animals and plants.

b. Coral are actually composed of more than one species of marine life.

c. Other species eat coral.

d. Coral eat other species.

Answers

d is the answer 



hope thi helps you

Answer:

A. Coral provide a habitat for many marine animals and plants.

Explanation:

if you have ever seen anything of a coral reef you will see plenty of fish in the coral hiding from predators, etc.

Which of the following terms describes the primary core of a comet?

Answers

This primary core is the nucleus.

Hope this helped!!
~xox Melis

What trait in pea plants is being studied in the cross shown above?

Answers

Height is being studied

The grass is the base of this food pyramid. The grass produces energy to support the entire pyramid or food chain through what process? A) predation B) respiration C) photosynthesis D) cell respiration

Answers

Photosynthesis. Option D   

Answer: Option C.

Photosynthesis.

Explanation:

The grass produce food at the base of the pyramid through a process of photosynthesis.

Photosythesis is the process where green plants produce food and oxygen by using light energy from the sun with carbondioxide and water . It is at the base of food pyramid because it is the primary producer.

Which is demonstrated by arrow 3?

Answers

This figure is of the water cycle. Arrow 3 is demonstrating precipitation. It is showing the passage of water (it looks like rain) down from a cloud and into the body of water. Precipitation occurs when the droplets of water that make up a cloud get too heavy and begin to fall to the earth, where they can absorb into the ground or return to the ocean.
Arrow three demonstrates Precipitation

This is a condition or illness that prevents the body or mind from working

Answers

The answer is Disease! Hope it helps!
Hello,

Here is your answer:

The proper answer to this question is that the condition is called "disease".

Here is how:

Diseases can cause harm to the body and mind and in some cases cause death. There are many types of diseases that can affect your health.

Your answer is disease.

If you need anymore help feel free to ask me!

Hope this helps!

Which statement accurately describe the role of decomposers in the carbon cycle?

Answers

A,C, D.. Those are correct ..

Answer:

A,C,D

Explanation:

Explain how differences in the niche requirements of organisms can contribute to community patterns such as zonation

Answers

is there more to this?
An organism's niche is the role it plays in its environment and the niche includes all of the interactions the organism has with the abiotic and biotic component of its environment. When a certain niche, such as that of the apex predator, is being fulfilled by more than one organism, competition for resources takes place. This competition hinders an organism's ability to easily access the resources it needs to survive. Therefore, organisms move from one place to another in order to reduce the competition they meet. When a sustainable population of organisms is created, each sitting well in their own niche, then zonation occurs, and the organisms remain in that place.

Which of the following diseases can cause paralysis?
polio
yellow fever
Rocky Mountain spotted fever
rabies
chicken pox

Answers

Polio is a disease that can cause paralysis i  hope this helps you

Among the diseases listed, polio, rabies, and Rocky Mountain spotted fever can cause paralysis.

- Polio is known for causing muscle weakness and paralysis, which can sometimes be permanent.

- Rabies, if left untreated, can lead to paralysis as the virus attacks the nervous system.

- Rocky Mountain spotted fever, a bacterial infection transmitted by ticks, can lead to neurological symptoms including paralysis in severe cases.

The incorrect options are:

Yellow fever: Yellow fever is a viral hemorrhagic fever caused by the yellow fever virus, primarily transmitted by mosquitoes. While yellow fever can cause various symptoms such as fever, headache, jaundice (yellowing of the skin and eyes), and even liver damage, it typically does not lead to paralysis.

Chickenpox: Chickenpox is a highly contagious viral infection caused by the varicella-zoster virus. While chickenpox can cause discomfort and itching due to its characteristic rash of itchy blisters, it does not typically lead to paralysis.

which is an example of circadian rhythm in plants?

Answers

the flowering of the four 'o clock plant at the same time everyday.

Hope this helps!

-Payshence xoxo

What are cells that express the same genes?

similar


different


mutated


not living

Answers

I would say similar, since because they express the same genes they have something in common

Answer:

Similar

Explanation:

Similar cells are the cells that express the same genes and perform the same function. Similar cells contain or store the same genetic instructions for performing similar specific functions. Cells are the basic structural and functional unit of a living organism. Cells are usually microscopic, and consist of a quantity of protoplasm surrounded by a cell membrane. Cells are able to synthesize proteins, and can replicate themselves independently. The two types of cells are; eukaryotic (cells with true nucleus) cells, and prokaryotic cells (cells without true nucleus).

Which of the following threats to biodiversity is a result of plants and animals introduced to an ecosystem where they are not normally found?

Answers

The answer is D: Invasive Species. That's basically when plants, animals, fungus, etc are placed in an environment unfamiliar to them, and have a tendency to spread and cause damage to human environments, health, etc.

Hope this helps!

Answer:

THe answer is D  Invasive species

Explanation:

I hope this helps

What is a kangaroo rat?

Primary Producer
Secondary Producer
Primary Consumer
Secondary Consumer

Answers

Secondary consumer, your welcome

Final answer:

A kangaroo rat is a Primary Consumer. It is a small rodent that lives in arid regions, named for its resemblance to kangaroos in its hopping movement. It primarily feeds on plant material, making it a primary consumer in the food chain.

Explanation:

Kangaroo rats are small rodents that live in arid regions of the United States and Mexico. They are named 'kangaroo rats' because of their large hind feet and long tails, which enable them to hop like kangaroos.

As for their position in the food chain, kangaroo rats, like all herbivores, are primary consumers. This means that they predominantly feed on seeds, leaves, stems, and other plant material. This plant material is produced by primary producers (plants), and the kangaroo rats, in turn, provide a food source for secondary consumers (predators).

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The human activities in two locations are described below:

Location A: Rampant use of plastic containers
Location B: Excessive use of pesticides and fertilizers

Which statement is most likely true?

A.) Location A will have poor air quality because plastic is biodegradable.
B.) Location A will experience water scarcity because plastic absorbs moisture.
C.) The population of birds will increase in Location B because production of crops will increase.
D.) The population of aquatic plants in Location B will decrease because water is contaminated.

Answers

D makes the most sence. pesticides will contaminate water and kill aquatic plants and maybe even aquatic life

Answer:

(D) The population of aquatic plants in Location B will decrease because water is contaminated.

Explanation:

When people use pesticides it harms the environment cause it goes into the ground and like run-off water it goes back into the ocean contaminating the water causing the animals and plants to get harmed and die off quicker. Why you may ask, Cause Pesticides use straight up chemicals which hurts us and animals.  When people use fertilizers they abuse the soil causing it to become a desertification area after it is desertification-ed people and animals must move in order to survive.

What country has more coal reserves than any other country in the world

Answers

Well, the top 7 countries that i know that have more coal in they're country would be Kazakhstan, South Africa, Russia, Indonesia, Australia, India, and the biggest country of all that has way more coal than all of these countries is China

So your answer for this question would be: Russia 
I hope i answered your question! 

What is the key characteristic of sponges and how are they involved in the sponges filter feeding process?

Answers

Specialized cells that filter out food particles, such as bacteria; characteristic of sponges. Animal that obtains organic matter for nutrition by filtering particles out of water. Opening through which water flows out of a sponge; excurrent pore.

Final answer:

Sponges are characterized by their unique filter feeding process, where water is pumped through their porous bodies, allowing collar cells (choanocytes) to trap and ingest food particles through phagocytosis.

Explanation:

Sponges, belonging to the phylum Porifera, are aquatic invertebrates known for their unique filter feeding system. Unlike other animals, they lack mouths and instead draw water through numerous pores on their surface. The water carries microscopic food particles into their bodies, which are then filtered out by specialized cells called choanocytes, or collar cells. These cells capture food through a process known as phagocytosis.

The feeding mechanism involves water entering through the pores (ostia) and passing through a large central cavity, the spongocoel, before being expelled out of the larger opening called the osculum. The water flow is unidirectional, driven by the beating of flagella on the choanocytes, within interconnected chambers lined by these cells. As the water passes, food particles are trapped by the collar of the choanocytes and ingested for nutrients, while oxygen is concurrently diffused into the cells, and wastes are expelled.

Overall, the key characteristic of sponges is their ability to filter feed by pumping water through their bodies, trapping food particles with their choanocytes, and utilizing intracellular digestion to sustain themselves.

The transfer of energy that occurs when molecules bump into one another is called ____.

Answers

The transfer of energy that occurs when molecules bump into one another is called conduction.

An mRNA strand has 204 bases to code for a protein from start to stop. how many amino acids will the resulting protein contain

Answers

There will be 68 Amino Acids in the Protein produced. In translation, the RNA is read in groups of 3 bases. These three bases are called codons, and the complimentary bases are called anti-codons. Therefore, if we have 204 bases, then 204/3 bases in a codon = 68 codons. Each codon codes for an Amino Acid, so 68 codons results in 68 Amino Acids in the resulting protein.
Final answer:

The mRNA strand with 204 bases will code for a protein containing 67 amino acids, as each amino acid is defined by a three-nucleotide sequence, the codon. The subtraction of one is due to the stop codon which does not code for an amino acid.

Explanation:

A protein sequence is made up of a chain of amino acids, each of which is coded by a three-nucleotide sequence in mRNA, known as a codon. Based on the number of bases in the mRNA strand, we can determine how many amino acids it will produce by dividing the total number of bases by three. In this case, the mRNA stand has 204 bases. However, the start and stop codons are also included in this count. So with 204 bases and 3 bases per codon, we have 68 codons. However, since one of these is a stop codon which does not code for an amino acid, the resulting protein will contain 67 amino acids.

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Kevin has a very detailed model of the solar system where each planet is made out of granite rock. Since his little sister really liked the model, he spent two weeks in his dad's workshop building her a Styrofoam copy. When he picked up the models to take them back inside the house, which physical property would he immediately notice upon picking them up?

Answers

A physical property would be the property.

which of these is most likely to cause increasing numbers of severe weather events

Answers

may we have the choices but i will say human impact 

Answer:

slowing of the thermohaline circulation

Explanation:

just got it right

Why would a long taproot be beneficial for large woody dicot such as a tree?

Answers

Taproots are super long roots that go far into the ground, so not only do these roots help anchor the tree, it also helps the tree when there may be a drought.  The taproots can get down deep into the ground, where there is a higher chance of finding water deeper down in the soil. 

A long taproot benefits large woody dicots, like trees, by accessing deep water, storing food, anchoring the tree firmly, and efficiently using soil nutrients.

Benefits of a Long Taproot for Large Woody Dicots

A long taproot is highly advantageous for large woody dicots, such as trees, due to several reasons:

Deep Water Access: A taproot can penetrate deep into the soil, reaching water sources that are inaccessible to other plants, which is crucial for survival during droughts.Food Storage: The large central root can store significant amounts of food and water, providing energy reserves during unfavorable conditions.Anchorage: The strong primary root anchors the tree firmly into the ground, helping it resist strong winds and preventing uprooting by herbivores.Soil Quality Utilization: Secondary roots branching from the taproot can exploit high-quality soil areas, maximizing nutrient and moisture uptake.

This root system ensures the tree's robustness and longevity in varied environmental conditions.

Why does warm water go on top of cold water

Answers

This is because warm water is less dense than cold water. Think of it this way, if you were cold, then you'd try to get more warm by bringing yourself together. If you felt hot, then you'd spread your body parts out to not feel hot. So the same thing with molecules, if the water is warm then it's less dense. If the water is cold then it's more dense/tightly packed. 

Who do the animals in an ecosystem mainly acquire the sun' s energy

Answers

Animals likes the sun's energy. The sun supplies energy to plants to help them grow for animals. Animals eat the plants to get the energy they need.

Hope this helps!! ;))
Have a grat day!! <3

in ecology, PPDF stands for

Answers

In ecology, PPDF stands for Ponderosa pine–Douglas-fir, It is given the name of pine, but corresponds to the genus Pseudotsuga, and is marketed under different names, such as Oregon pine, Oregon, Douglas-fir and Douglas fir.
In ecology, PPDF stands for Ponderosa Pine Douglas Fir.

In general, PPDF is used as a security of a document which exceeds what someone can do within the PDF software were itself. In ecology its PPDF genus is Pseudotsuga.
Other names which are marketed include
Douglas fir, Oregon, and Oregon pine.

When parking downhill on a road with a curb, you should turn your front wheels __________ .

A. parallel to the curb
B. towards the curb
C. towards the street

Answers

B because the car not gone turn with the curb so turn towards it

Suppose you are an astronomer, and a child asks you to explain the light given off by stars. In your own words, describe the relationship between the energy, frequency, and wavelength. Be sure to include information about the electromagnetic spectrum in your discussion. (5 points) >

Answers

There are different kinds of light, and they vary by energy, frequency, and wavelength. Energy and frequency go together, so the light that has high frequency has high energy, and vice versa. Frequency and wavelength are opposites, so as frequency increases, wavelength decreases. The light that we see from stars is visible light, which is only a very small part of the different possible kinds of lights. Our eyes are only able to see within a small range of wavelengths.
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