BIOLOGY MIDDLE SCHOOL

Identify which ways to keep the respiratory system healthy

Answers

Answer 1
Answer: Respiratory system= breathing system
To keep our Respiratory system healthy we should:
1- never breathe in front of polluted areas
2- never pollute our areas
3- try to make our environment normal

Related Questions

Why can't plants and animals use the nitrogen directly from the atmosphere?Answer A.There is not enough of it in the air. B.Nitrogen gas contains the element in an inert, unusable state. C.They do use it directly from the atmosphere. D.Plants and animals do not need nitrogen for their life processes.
___________succession occurs in areas where there is already soil, but the plantsand animal life there has been wiped out.A)SecondaryB)PrimaryC)AnnualD)All of these
In a plant, the cell walls act as a support system and provide shape for the plant.Which structures in the human body are similar in function to the cell wall of a plant?A.ligaments and tendonsB.arteries and veinsC.muscles and jointsD.bones and cartilage-------------------------------------------------------------Which organ is being described in this statement?If this organ malfunctions, all other body systems would be deprived of nutrients.A.urethraB.brainC.lungsD.stomach---------------------------------------------------Which statement is correct about the growth and development of vertebrates? A.The larva will undergo many changes after leaving its cocoon.B.A fertilized egg will undergo many changes and become an embryo.C.The gamete will undergo many changes after the egg is fertilized.D.The pupa will undergo many changes within a cocoon.----------------------------------------------------------------------------------Which is produced immediately after a plant sperm cell fertilizes an egg cell?A.plant nutrientsB.a zygoteC.a sporeD.sweet nectar-------------------------------------------------------Which terms are used for gametes that are needed for reproduction in vertebrate animals?A.sperm and eggsB.seeds and sporesC.buds and offspringD.antibodies and pathogens-------------------------------------------------------------Which activity distinguishes the larva stage from the pupa stage of an insect? A.locating shelterB.making its own foodC.reproducingD.feeding-----------------------------------------------Which statement describes the life cycle of a butterfly?A.sheds its exoskeletonB.incomplete metamorphosisC.stages of infancy and pubertyD.complete metamorphosis
Which of the following best relates behavior and evolution? A. Most behaviors aren't influenced by genes and, therefore, aren't able to evolve. B. There's no link between inherited behaviors and evolution. C. Inherited behaviors that don't allow animals to survive and reproduce will be spread throughout the population and can evolve by natural selection. D. Inherited behaviors that allow animals to survive and reproduce will be spread throughout the population and can evolve by natural selection.
soil in place what will most likely happen to native animals in the marsh and swamp ecosystem where nutrias are introduced? Native animals will adapt and survive with he nutria G Native animals will decline due to their natural habitat being destroyed. The number of native animals will increase. The native animals will become a natural predator of the nutria

2.Which volcanic feature is formed when lava flows out evenly from a fissure?

a composite volcano

b lava plateau

c cinder cone

d caldera

Answers

I believe It is A because fissure eruptions are common on large volcanoes and also is built up by many layers of hardened lava, tephra, pumice, and volcanic ash.

Who created artifacts such as ironarmor, swords, pottery, jade, and
bronze?
A. Hinduism and Buddhism
B. Europeans
C. Hal Artisans

Answers

Answer: c

Explanation:

The complete back-and-forth motion of an object is called a ??

Answers

harmonic motion is the answer

Read the observation, question, and hypothesis. Then, choose the dependent variable from the list.

Answers

The right answer for the question that is being asked and shown above is that: "Read the observation, question, and hypothesis. Then, choose the dependent variable from the list. Dependent variables are those variables that depends on the independent variable in order to get the output."

which type of immune cells will recognize a secondary infection by a virus causing a much more rapid immune response

Answers

Answer:

antibodies are responsible for most antiviral activity in serum

Answer:

The antibodies

Explanation:

Which is the most likely cause of the observed variation?

Answers

Competition among individuals for available food sources is most likely the cause of the observed variation.

What are the five food sources?

As the MyPlate icon shows, the five food groups are Fruits, Vegetables, Grains, Protein Foods, and Dairy.

What is an example of a food source?

The most obvious examples of the foods we source from plants are fruits and vegetables. All of the fruits and vegetables grow on plants. Another example of food from planted crops. These are rice, wheat, maize, millets, barley, etc.

Learn more about  food sources at

brainly.com/question/24635136

#SPJ2

Answer:

competition among individuals for available food sources

Explanation:

Charles Darwin observed a unique beak size and shape in the finch population of each of the Galapagos Islands that he visited.  

-- Which is the most likely cause of the observed variation?

competition among individuals for available food sources
Other Questions
How do flowering plants reproduce by fertilization if they are immotile?Fertilization takes place in their roots.O They conjugate with plants nearest them.Insects and other organisms carry pollen to other flowers.
Antibiotic resistance in bacteria is the result of A) binary fission. B) nitrogen fixation C) genetic variation. D) genetic engineering.
Do you think a desert plant is mostly to have a thin cuticle or a thick cuticle?
Early as the 9th century, it was suggested when organisms change, they may be better able to ____________.reproduce find a home adapt to survive​