the study of similarities in embryos of
organisms to find common connections

All of the trees in an ecosystem are examples of the biotic factors in an ecosystem (Option D).

Biotic factors refer to the living components of an ecosystem, including all of the organisms that live within it. This can include plants, animals, fungi, and microorganisms. These living components interact with each other and with the non-living components of the ecosystem, known as the abiotic factors, to shape the ecosystem and maintain its balance.

For example, plants play a crucial role in the ecosystem by producing oxygen through photosynthesis and providing food and habitat for other organisms. Similarly, predators play an important role in maintaining the balance of populations of prey species. Biotic factors can also influence the physical environment, such as through the creation of soil through the decomposition of organic matter by microbes and other organisms.

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Answer:

television and remote controlled stuff

Explanation:

Answer:

radios

television

cellular phones

walkie talkies

computers

radar

sonar

telescopes

satellites

missiles

rockets

Answer:

These bones support your body and give it shape. ( Shape)

Bones allow you to move.( Dancing Skeleton)

Bones make blood cells and store important minerals. ( Marrow making blood)

Bones protect vital organs.( Bones & Organs Game)

Explanation:

Flat Bones Protect Internal Organs. ...

Long Bones Support Weight and Facilitate Movement. ...

Short Bones Are Cube-shaped. ...

Irregular Bones Have Complex Shapes

Answer:

Copy of one side of DNA strand is made

mRNA moves to cytoplasm, then ribosome.

mRNA goes through ribosome 3 bases at a time

transfer RNA (tRNA) matches up with the open DNA bases.

tRNA releases the amino acid at the top, which joins the chain of amino acids being produced

Explanation:

Answer:

a dup. of one side of a dna strand is made

mRNA changes to cytoplasm, then it goes to ribosome.

then mRNA goes through ribosome 3 bases at a time.

transfer RNA matches up with the open DNA bases.

tRNA lets go the amino acid at the top which joins the chain of amino acids being produced.

Explanation:

:P

Answer:

Hydrogen-powered fuel cell electric vehicles emit none of these harmful substances—only water (H2O) and warm air

Explanation:

transportation sector accounts for about one-third of U.S. carbon dioxide emissions, using these sources to produce hydrogen for transportation can cut greenhouse gas emissions

Answer:

"Apart from fumes, there is also no air pollution from hydrogen fuel cell cars at all. Conventional cars emit gases that contribute to ozone layer depletion and also to the development of acid rain. Thus, there are many issues to the use of conventional gas that use fossil fuels which could be avoided by using hydrogen cars instead."

Explanation:

I used quotes because copying without quotes is illegal

Answer:

High in the atmosphere, air pressure decreases. ... A low pressure system has lower pressure at its center than the areas around it. Winds blow towards the low pressure, and the air rises in the atmosphere where they meet. As the air rises, the water vapor within it condenses, forming clouds and often precipitation.

B) The air moves to the low pressure system, creating wind.

When a low air pressure system meets a high air pressure system, air from the high pressure system flows towards the low pressure system in an attempt to balance the pressure.

This movement of air creates wind. The stronger the difference in pressure, the stronger the wind. This is why wind speed is often stronger in areas with a large contrast in pressure, such as near fronts where a low pressure system meets a high pressure system.

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Answer:

Explanation:

     e     e

E  Ee   ee

e   ee ee

g: Ee, ee

p: bblue, brown

Answer:

Its number 4 , After billions of years, cyanobacteria turns into iron; the iron beds are remnants from cyanobacteria. its 7th grade science.

Explanation:

Answer:

B or C they both look good

Explanation:

Answer:

Image result for what is one type of atomic particle that is found in the nucleus that does not contribute to a elements number

Electrons

Electrons are much smaller in mass than protons, weighing only 9.11 × 10−28 grams, or about 1/1800 of an atomic mass unit. Therefore, they do not contribute much to an element's overall atomic mass.

Explanation:

Answer:

long are W which means that they are stronger than the w trait of short.  

1)the big word means that it will have two W traits, (or W,W), and heterozygous will mean that the seal will have one W and one w, (or W, w).  

your Punnett Square will look like this W     W  which means that 100% of  

these       W W W  W W  

seals        w  W w  W w  

will have long.  

2)Heterozygous and a short will look like this  

           w  W w  w w  

           w   w w  w w  

which means that only 25% will have long and 75% will have short, this is due to how W traits will almost always beat recessive traits.  

3)Now one is, (H) and two is, (h). Two Hybrid means that they are Heterozygous. This will make your Punnett Square look like this                              

       H    h  

 H  H H  H h  

 h   H h  h h  

the possible Genotypes willbe H H, H h, h h.  

Phenotypes, looktraits willbe One,and Two.  

The genotypes of a specific cross and breeding experiment are predicted using the Punnett square.

The genotypes of a specific cross and breeding experiment are predicted using the Punnett square, a square diagram. It bears Reginald C. Punnett's name, who developed the method in 1905. Biologists use the figure to calculate the likelihood that a child will have a specific genotype.

A Punnett square is indeed a table that lists potential pairings of paternal and maternal alleles. These tables could be used to look at the genotypic odds of a specific characteristic (allele) or of crossing numerous traits first from parents.

1)  W W W  W W  

   w  W w  W w  

    100% will have long whiskers

      0% will have short whiskers

2) w  W w  w w  

    w   w w  w w  

  25% will have long

    75% will have short

3) H  H H  H h  

     h   H h  h h  

possible Genotype= H H, H h, h h.  

Therefore, the genotypes of a specific cross and breeding experiment are predicted using the Punnett square.

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Answer:

gdtivdgjbdeikbfryiokhgy

Answer:

A.True That's the answer

Answer:

Your answer should be C I believe

Answer:

Your answer is C).

Answer:

c is the answer the other guy or girl is correct

The weather state that is most likely to cause precipitation is : ( C ) High humidity

Humidity is the basically the amount of water vapor currently present in the atmosphere. As the water vapor increase the humidity of the region increases.

The higher the humidity the more likely precipitation will occur, this is because as the water vapor increases in the air the environment feels wetter which leads to and increase in precipitation.

Hence we can conclude that the weather state that is most likely to cause precipitation is High humudity

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Answer:

B because that is how most are

Answer:

intertropical convergence zone

Explanation:

At the intertropical convergence zone near the equator, where the trade winds from the northern and southern hemispheres converge, the air rises, producing a belt of weak, light, shifting winds called the doldrums.

The pressure zone that separates the Westerlies and Easterlies in the northern and southern hemispheres is called the Subpolar lows.

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Answer:

ice

Explanation:

answer:alil

Reason: Your demon name is your name spelled backwards and Lila spelt backwards is alil

Answer:

A : size of natural habitats...

Answer:

polar includes the coldest regions of the world.

Hope it will help :)

Answer:

ll living things are composed of cells. This is one of the tenets of the Cell Theory, a basic theory of biology. This remarkable fact was first discovered some 300 years ago and continues to be a source of wonder and research today. Cell biology is an extremely active area of study and helps us answer such fundamental questions as how organisms function. Through an understanding of how cells function we can discover how human ailments, such as cancer and AIDS, can be possibly treated.

THE CELL THEORY

All life is composed of cells

Cells are the fundamental units which possess all the characteristics of living things

New cells can only come into existence by the division of previously existing cells

Notice that this scientific concept about life is called a theory. In science, unlike the layman’s definition, the word theory is used for a hypothesis about which there is a large body of convincing evidence. Under experimental conditions all observations have thus far confirmed the theory. The evidence that helped formulate the theory was obtained using the microscope. The microscope is of enormous importance to biology and has extended our ability to see beyond the scope of the naked eye.

When we look at cells under the microscope, our usual measurements fail to work. In science, the metric system is used to measure objects and, as you will see, is vastly superior to our antiquated English system of measurement. Here are the basic units:

Length Volume Weight

1 meter (m) 1 liter (L) 1 gram (g)

1 millimeter (mm) = 0.001 m or 10−3 m or 1/1,000 m 1 milliliter (ml) = 0.001 L or 10−3 L 1 milligram (mg) = 0.001 g or 10−3 g

1 micrometer (mm)= 0.000001 m or 10−6 m or 1/1,000,000 m 1 microliter (ml) = 0.000001 L or 10−6 L 1 microgram (mg) = 0.000001 g or 10−6 g

1 nanometer (nm)= 0.000000001 m or 10−9 m or 1/1,000,000,000 m  

There is also a different scale for temperature: Celcius.

100˚ Celcius (C) = water boiling (equivalent to 212˚ F)

0˚ C = water freezing (equivalent to 32˚ F)

Converting between units can be confusing. The most effective way to do this is by using conversion factors and canceling units. For example, if you want to know how many liters are in 425 milliliters, you can set up a simple equation that looks like this.

[latex]\displaystyle{425}\text{ ml}\times\frac{1\text{ liter}}{1000\text{ ml}}=\frac{425\text{ ml}}{1000\text{ ml}}=0.425\text{ L}[/latex]

PRACTICE

1.2 mm = ________ mm 0.224 m = ________ mm 225 nm =___________mm

0.023 L = ________ ml 750 ml = _________L 50 ml       =___________ L

Part 1: Microscope Parts

Nikon microscope with parts labelled. The compound microscope is a precision instrument. Treat it with respect. When carrying it, always use two hands, one on the base and one on the neck.

The microscope consists of a stand (base + neck), on which is mounted the stage (for holding microscope slides) and lenses. The lens that you look through is the ocular (paired in binocular scopes); the lens that focuses on the specimen is the objective.

Your microscope has four objectives of varying magnifications (4x, 10x, 40x, and 100x) mounted on a revolving nosepiece. The 100x objective is a special oil immersion objective that needs to be used with oil—we won’t use the oil immersion objective for this course.

Positioning the specimen requires that you turn the mechanical stage controls, which operate the slide bracket on the surface of the stage. One control moves the specimen in the x-direction, and the other moves the specimen in the y-direction.

Focusing on the specimen is achieved by knobs that move the stage up and down, so that it is closer or farther from the objective. There are two knobs, an outer coarse focus and an inner fine focus.

The substage condenser directs light through the slide into the objective. An iris diaphragm on the substage condenser controls the amount of light reaching the objective, and also affects the contrast of the specimen.

Part 2: Magnification

The compound microscope has two sets of lenses; the ocular lens (or eye piece) which magnifies an object 10 times its normal size, and the objective lenses located on a revolving nosepiece. Rotate the nosepiece and notice how each objective lens clicks into place. Each objective lens has a different magnification of power written on it (such as 4, 10, 40, or 100). This number is the power of magnification for each of the objective lenses. For total magnification multiply the ocular power (10x) times the objective lens that is in place. For example, if you have a 10x ocular and a 10x objective, the total magnification is: 10x × 10x = 100x.

Answer:

1. Your fingertips are in constant, direct communication with your brain through your body's somatosensory system, a massive network of nerve endings and specialized touch receptors in the skin.

Explanation:

1. A neuron has three main parts. The cell body directs all activities of the neuron. Dendrites

extend out from the cell body and receive messages from other nerve cells. An axon is

a long single fiber that transmits messages from the cell body to the dendrites of other

neurons or to other body tissues, such as muscles. A protective covering called the myelin

sheath, covers most neurons. Myelin insulates the axon and helps nerve signals travel

faster and farther.

Messages travel along a single neuron as electrical impulses, but messages between

neurons travel differently. The transfer of information from neuron to neuron takes place

through the release of chemical substances into the space between the axon and the

dendrites. These chemicals are called neurotransmitters, and the process is called

neurotransmission. The space between the axon and the dendrites is called the synapse

When neurons communicate, the neurotransmitters from one neuron are released, cross the synapse, and attach themselves to special molecules in the next neuron called receptors. Receptors receive and process the message, then send it on to the next neuron. Eventually, the message reaches the brain.

Answer:

Explanation:

Since the light ray is passing from a medium in which it travels relatively slow (more optically dense) to a medium in which it travels fast (less optically dense), it will bend away from the normal line. ... Rather, these incident rays diverge upon refracting through the lens.

Light  traveling through an eyeglass lens refracts because of the difference in the refractive index of the lens material and the air that is present surrounding it, as light bends differently in different mediums.

Light traveling through an eyeglass lens refracts because of the difference in the refractive index of the lens and the air, so when light enters something with a different refractive index, such as an eyeglass lens, it slows down and changes direction, and the difference in thickness in the eyeglass causes light rays entering the lens from different angles to be bent differently.

Hence, light traveling through an eyeglass lens refracts because of the difference in the refractive index of the lens material and the air that is present surrounding it, as light bends differently in different mediums.

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