hello please help i’ll give brainliest

Answer:

The Sun's gravitational force is like the tetherball rope, in that it constantly pulls Earth toward it. ... This means that the planet neither flies out into space nor falls into the Sun. Instead, it travels in a nearly circular motion around the Sun, creating an orbit

Answer:

B. Sound waves can move through various mediums.

Explanation:

Answer:

Explanation:

A food chain only follows one path of what food animals eat. A food web consists of many food chains that show how plants and animals are connected. In conclusions, a food chain focuses on a certain animal or their path and they are linear. Food webs are more complex which show how the ecosystem works together to create a balance.

Answer:

A food chain goes in one drection and a food web is more complex and is a whole system of connected food chains.

Explanation:

Answer:

Hollow bones is the correct answer.

Explanation:

As hollow bones makes the density of bird less than air that's why birds can fly easily

Answer:

hollow bones

Explanation:

Answer: 3

Explanation:

Explanation:

cells and cancerous chicken stomach cells, excluding interphase, which had a dramatic difference. ... The stage that held the most difference was Interphase. In normal chicken cells, the duration for interphase was 550 minutes. However for interphase in cancerous chicken stomach cells, it was 380 minutes.

Answer:

If something is at rest it will stay at rest UNTIL a force acts upon it same thing if it is moving it will go in a straight line unless an outside force is acted upon it

This law is also known as the law of inertia.

Answer:

introduction of new predators to the insects.

Answer:

the introduction of new predators to the insects’ environment

Explanation:

Answer:

Heat decrease the thermal energy of an object as energy moves to the air. Heat causes the thermal energy of the object to increase as energy moves from warmer air to the colder object

I dont know what is the answer sorry!

Answer:

kerana sel haiwan tidak mempunyai dinding sel

Answer:

Incluso una fracción del dinero gastado anualmente en exploración espacial podría salvar a millones de personas en países afectados por la pobreza y mejorar las condiciones de vida de las generaciones futuras. Los cimientos del mundo en el que vivimos se basan en gran medida en la ciencia y, de hecho, es vital ampliar nuestro conocimiento del universo.

Answer:

D. DNA contains uracil.

Explanation:

Uracil is in RNA. DNA has Thymine.

Answer:

The mass of a tree is primarily carbon. The carbon comes from carbon dioxide used during photosynthesis. During photosynthesis, plants convert the sun's energy into chemical energy which is captured within the bonds of carbon molecules built from atmospheric carbon dioxide and water.

Answer:

Gg x Gg

Explanation:

Gg x Gg crosses would be expected to produce the greatest variety of genotypes among the offspring.

A Punnett square is defined as a graphical representation of the possible genotypes of the offspring resulting from a particular cross or breeding event. Creating a Punnett square requires knowledge of the genetic makeup of the parents.

For a monohybrid cross, Punnett squares are 2X2 squares containing four boxes where each represents a fertilization event between the original gametes. While the second type is used to predict the outcome of breeding experiments where two traits are being observed and the Punnett square is large with sixteen boxes.

In the above example, if a Gg x Gg cross occurs, the genotype for the children will be Gg, which would be expected to produce the greatest diversity of genotypes among the offspring, i.e. 100%.

Thus, Gg x Gg crosses would be expected to produce the greatest variety of genotypes among the offspring.

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Explanation:

Where is the photograph??

Answer:

pink green yellow green.

sorry, but I don't get yr question.

Answer:

A biological system is a complex network which connects several biologically relevant entities. Biological organization spans several scales and are determined based different structures depending on what the system is. Examples of biological systems at the macro scale are populations of organisms.

Answer:

The endocrine system is the collection of glands that produce hormones that regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things.

Answer:

a. 0.5 grams b. 0.25

Explanation:

Just use the half-life formula(I linked it below)

a. 4(1/2)^90/30=1/2

b. 4(1/2)^120/30=1/4

A. 0.5 grams is left unchanged after 90 days.

B. 0.25 grams is left unchanged after 120 days.

The half-life of a radioactive isotope is defined as the time it takes for half of the radioactive isotope to decay. It is stable in specific radioactive isotopes. It is unaffected by circumstances. It is also independent of the initial amount of that isotope.

It can be find out by this formula:-

[tex]N=N_o (1/2)^n\\\\[/tex]

where, N=  quantity of the substance remaining

[tex]N_o[/tex]= initial quantity of the substance

n= number of half lives

For above given example,

Given that radioactive element X has a half-life 30 days

Hence the number (n) of half-lives in 90 days

n=90/30

n=3

The amount N of radioactive element X left after n=3 half-lives with initial amount [tex]N_o[/tex]=4 gm

[tex]N=N_o (1/2)^n\\\\\\N= 4 (1/2)^3\\N= 4(1/8)\\N= 0.5 gms\\\\\\[/tex]

For 120 days, n=120/30

so, n= 4

Then,

[tex]N=4(1/2)^4\\N=4(1/16)\\N=0.25 gms[/tex]

Thus, A. 0.5 grams is left unchanged after 90 days.

B. 0.25 grams is left unchanged after 120 days.

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Answer: The three ways the growth of suburban populations( urbanisation) would affect the environment include:

--> Insufficient water availability,

--> Waste-disposal problems, and

--> High energy consumption.

Explanation:

The growth of suburban population is also called URBANISATION. This is defined as the rapid growth of an urban area which occurred due to the movement of individuals from rural areas into the urban area. There are different reasons why individuals migrate to urban areas these include:

--> for a better access to health care services

--> for more education opportunities

--> To combat the problems of unemployment and

--> for better participation in political and social activities.

The three ways the growth of suburban populations( urbanisation) would affect the environment include:

--> Insufficient water availability: the increase in the urban population creates a high demand for water use both for industrial and domestic uses.

--> Waste-disposal problems, and

--> High energy consumption.

Answer:

Deforestation, Water pollution, Introduction of invasive species

Explanation:

For ages, human beings have been altering the natural ecosystems and causing irreparable damages to nature. Development drove to an unmeasurable advance over new unpopulated areas.

Some of the principal human activities responsible for biodiversity loss are

• the uncontrolled use of unrenewable resources,

• overexploitation of renewable resources;

• land destruction for the mining industry, farming and cattle industry, buildings, and other infrastructures;

• the unplanned advance of cities, and opening of new roads to connect those cities.  

All of them involving

And the growth of suburban populations is a frequent human activity causing an impact on nature. To mention a few ways in with this action might affect ecosystems, we can name the followings,

Deforestation:        

The growth of suburban populations is indefectibly related to deforestation.  New open areas are needed for buildings, roads, and service establishments, such as natural gas or water ducts, light, and others. There hardly exists planning about the cities´ growth and conscientious conservation of nature.

Water pollution:  

Water is severely polluted while constructing buildings and roads. The wastes of materials used for construction, oil coming from transport and machinery, human wastes, among other sources of contamination reach the rivers or lakes, polluting them and altering the natural equilibrium.

Introduction of invasive species:

It is very common to use ornamental vegetable species, proceeding from other areas or countries to arrange the gardens, streets, and parks. These species might become invasive and uncontrollable, causing severe damage in native endemic species by competing for resources. The whole ecosystem structure changes.

Deforestation, water pollution, and the introduction of invasive species are some of the causes of biodiveristy loss.

Answer:H mushrooms and snake

Explanation:

Answer:

A.

Plants use light energy to produce food molecules during photosynthesis and obtain cellular energy from the bonds of these food molecules during cellular respiration.

answer:

A. plants use light energy to produce food molecules during photosynthesis and obtain cellular energy from the bonds of these food molecules during cellular respiration.

explanation:

Answer:

-Respiratory diseases like asthma, bronchitis etc, are very common among these workers

-The workers suffer from various skin infections

-Other health problems include headache, fever, back pain, neck pain, ect.

Explanation:

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