Models are useful because

Answers

Answer 1

Answer:

because they are copies of actual object or actions.


Related Questions

El estómago es un órgano parecido a un saco que contiene los alimentos y comienza a digerirlos segregando jugo gástrico. ¿De qué sistema o aparato es parte el estomago? *

Answers

Answer:

Sistema digestivo

Explanation:

Los principales sistemas del cuerpo humano son:

Sistema respiratorio, sistema circulatorio, sistema nervioso, sistema inmune, sistema digestivo, sistema óseo, sistema urinario, sistema reproductor y sistema muscular.

Como dice el enunciado, el estómago comienza a digerir los alimentos haciendo parte, así, del sistema digestivo cuya función es digerir los alimentos y absorber sus nutrientes.

pushing a chair requires less energy than pushing than pushing a desk because

A. The surface area of the desk is larger.

B. The desk has less mass then then the chair

C. The chair has less mass then the desk

D. The chair is smaller

Answers

Answer:

c

the chair has less mass then the desk

what is a halflife in science?

Answers

One-half of the atomic nuclei of a radioactive sample to decay

What was Darwins “
master work” titled

Answers

Answer:

Origin of Species by Means of Natural Selection

Each Taxonomy (category) gets less and less specific as they go further down the list.

A. True

B. False

Answers

Answer:

B. False

Explanation:

The levels of classification, from broadest to most specific, include: kingdom, phylum, class, order, family, genus, and species.

Answer:

B. False

Explanation:

Taxonomy is the study of the general principles of scientific classification.

Crossing over occurs during Prophase II.

A. True

B. False

Answers

False
crossing over occurs in prophase 1 of meiosis 1. The significance of this crossing over is to ensure cell differentiation. If this occurred in prophase two it means the cells in meiosis 1 will be identical.

Answer:

B. False

Explanation:

Crossing over not occurs in prophase II. It occurs only during prophase I.

Which of these is an abiotic factor in a rainforest ecosystem?
Tree cover
Biodiversity
Trophic levels
Precipitation

Answers

I'd say precipitation, it won't be alive though so biodiversity is wrong

what are the effects of a change in protein? there is 3

Answers

Generally, mutations result in reduced protein function or no protein function. A mutation with reduced function is called a leaky mutation because some of the wild-type function “leaks” through into the phenotype. A mutation that results in no protein function is called a null mutation

I’m confused help me pls

Answers

Claim: This process uses expensive fertilizers and pesticides to grow pest free crops which may be produced in excess. Explain the reasons why people would go against growing wheat this way.

Your answer: Here are 3 reasons that go against growing wheat this way.

1. The fertilizers and pesticides are expensive and cost farmers a lot which takes away from the revenue that farmers make from growing the crops in the first place.

2. Other then fertilizers and Pesticides its a lot of work as you can see on the chart throughout the year there are many things you must do too keep crops bug free and pest free this reason I'm explaining says that taking and doing all of this work for not pests/bugs is too much and not needed.

3. Fungicide Is needed a lot and incredibly expensive when you used/spray it on crops that much and point goes a lot more for large crops too.

If these reasons don't work, find factors that or counterclaims that go against this method of harvesting wheat. (This is what your supposed too do)

what are cells surrounded and protected by?

Answers

Answer:

cells are surrounded by a structure called the cell membrane — which, much like the walls of a house, serves as a clear boundary between the cell's internal and external environments. The cell membrane is sometimes also referred to as the plasma membrane.

Answer:

The plasma membrane, or cell membrane

Explanation:


NO LINKS PLEASE

In the predator-prey relationship between lions and zebras, when the population of zebras is great, the population of lions will

A. decrease

B. increase

C. stay the same

D. die off

Answers

Answer:

B. Increase

Explanation:

Since lions rely on zebras as a food source, if there are more zebras (more food sources for the lions), there will also be more lions. Therefore, the lion population would increase initally.

i would assume it would decrease. not die off or increase. there’s no reason for it to increase.

This equation is unbalanced. Which of the following is the correct balanced equation for this reaction?

Answers

Answer:

There is no any unbalanced equation

A single species can feed at only one tropic level

True

False

Answers

Answer: True sorry if I’m wrong.

Explanation:

Answer:

True

Explanation:

If y'all know science can y'all do dis, it's a multiple-choice question
' What is the net force required to give a box of mass 5 kg an acceleration of 4 m/s2 ?'

Answers

The answer to the question is

The number 20.

Hope this helps you. Sorry if i am wrong.

When and where would you expect to find the highest rate of primary productivity

Answers

Answer: Net primary productivity is the amount of gross primary productivity remaining after respiration, which is about 40 and 85 percent. Sloughs and marshes, as well as tropical rain forests, possess the highest rates of net primary productivity; deserts have the lowest.

Explanation:

I explained on the top-

The highest rate of primary productivity in terrestrial environments takes place in swamps and marshes and in tropical rainforests, and in aquatic environments it takes place in algal beds, estuaries, and reefs.  

• In ecology, primary productivity refers to the rate at which conversion of energy to organic substances takes place by the photosynthetic producers that attain energy and nutrients from the sunlight, and chemosynthetic producers that attain chemical energy via oxidation.  

• The majority of the energy assimilated by plants via the process of photosynthesis is not stored as organic substance, however, is utilized at the time of cellular respiration.  

• In the process, the organic components like proteins, carbs, and fats are dissociated to provide energy in the form of ATP for the metabolic needs of the cells.  

• The energy not utilized is stored in the tissues of the plants for future use and is known as the net primary productivity.  

• The highest net primary productivity in terrestrial environments takes place in marshes and swamps and in tropical rainforests, and in aquatic environments it takes place algal beds, estuaries, and reefs.  

These environments are mainly critical for the sustenance of global biological productivity.

To know more about:

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The diagram above illustrates the carbon cycle. Which of the Following components of the diagram represent carbon sinks?
A. marine photosynthesis and respiration
B. volcanoes and soil carbon
C. oceans and fossil carbon
D. factories and photosynthesis

Answers

Answer:

D) Factories and Photosynthesis

What does "synthesis" mean?
A. to read DNA

B. to tear apart

C. to make something

Answers

Answer:

I believe it is C to make something

C. To make something

Explain how different types of cells help organisms live and grow?
Different types of cells have different jobs that are necessary to keep organisms alive.
Different types of cells are only found in specific types of organisms.
Cells are necessary in order for all organisms to grow big and hunt for their food source.
Cells provide support for all organisms to be able to move.

Answers

Answer:

Different types of cells have different jobs that are necessary to keep organisms alive. And cells also give the living animal more support. They also hold the genetic information of that organism in their nucules. This is with most cells but bacteria cells do not contain nucules.

is eczema recessive or dominant? explain why or how.

Answers

Answer:

When caused by CARD11 gene mutations, atopic dermatitis has an autosomal dominant inheritance pattern , which means one copy of the altered CARD11 gene in each cell is sufficient to cause the disorder.

Explanation:

pls mark brainlest

WILL IVE BRAIN?? Why might humans not have widespread regeneration abilities?

Answers

Answer: because mammals have more complex biological structures; limb regeneration would require sophisticated controls to ensure that limbs and organs don’t grow out of control.

Explanation:

The skull and vertebrae are part of the _________ in vertebrates. circulatory system endoskeleton nervous system exoskeleton Science

Answers

Answer:

Endoskeleton

Explanation:

Hope this helps!

Answer:

nerveos systum i think is tha anser

two types of global food webs show the feeding relationships of organsms. What distinguishes one type of global web from the other?
A whether the producers are located on land or in water
B whether or not the food web includes tertiary consumers
C whether the web includes animals that migrate during the year
D whether the ecosystem described by the web is localized or very broad

Answers

Answer:

A. wheter the producers are located on land or in the water.

What are the non-living components of an ecosystem?

Answers

Answer:

- Abiotic factors refer to non-living physical and chemical elements in the ecosystem.

- Abiotic resources are usually obtained from the lithosphere, atmosphere, and hydrosphere.

- Examples of abiotic factors are water, air, soil, sunlight, and minerals.

When comparing fossil A to fossil B, which is most likely correct?
Air
Soil
Up
Fossil A
-Fossil B

Answers

Fossil B would most likely be correct in this situation

Starch is a polysaccharide used as a component of cell walls in plants.


True

False

Answers

Answer:

false

Explanation:

is type of carbohydrates

False. Starch is a polysaccharide used as an energy storage molecule in plants, but it is not a component of cell walls.

What are structural component of cell wall?

Cell walls are structural components found in the outermost layers of cells in plants, fungi, and some bacteria. They provide support and protection for the cell, and are composed of a variety of different biomolecules, including cellulose, pectin, and lignin.

Starch, on the other hand, is a complex carbohydrate that is synthesized and stored in the cells of plants, particularly in the seeds, roots, and tubers. It is made up of long chains of glucose molecules and is used by plants as an energy source, particularly during times when the plant does not have access to light for photosynthesis. Starch is not a component of cell walls.

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Identify what holds DNA, the hereditary information of a cell?

(Its not the nucleus)

PLEASE HELP!

Answers

Answer:

chromatin network or chromosomes

Summary of human nutrition ​

Answers

Answer:

Human nutrition is the process of which substances are Transformed into tissues and energy which are used up to mental and physical activities!

Which of the following is NOT an example of natural selection? *
A. Plants with thorns are less likely to be eaten by herbivores than other members of the same species that lack thorns.

B. Bacterial populations in hospitals develop resistance to drugs used to combat infection by them.

C. Scientists breed cows that give greater amounts of milk than their ancestors.

D. Fruit fly larvae with an enzyme to break down alcohol are better able to feed on fermenting fruit than those that lack the enzyme.

E. Female fish that produce more eggs leave more offspring than those that produce fewer eggs.

Answers

Answer:

The Answer is C

Explanation:

When scientists breed cows to produce more milk, this has not occured naturally and thus is not natural selection.

Answer:

C. Scientists breed cows that give greater amounts of milk than their ancestors.

Explanation:

The scientists breed cows that give greater amounts of milk than their ancestors is not an example of natural selection. So, option (C) is correct.

Lisa is investigating a chemical reaction involving carbon compounds.which of these results could not occur cording to scientific laws about chemical reactions matter and energy

Answers

Answer: The mass of carbon in the products is greater than the mass of carbon in the reactants.

Explanation:

can anyone tell me what all books are there for cbse pcb class 11​

Answers

Answer:

NCERT Biology for Class 11.

NCERT Chemistry Part I for Class 11.

NCERT Chemistry Part II for Class 11.

NCERT Physics Part I for Class 11.

NCERT Physics Part II for Class 11.

NCERT Hornbill - English Core for Class 11.

NCERT Snapshot - Supplementary English Core for Class 11.

hope it helps

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