science

How is wildlife extinction impacting the world? Check these sites. http://www.endangeredspecie.com/Why_Save_.htm http://www.equalearth.org/wildlifeextinction.htm

18 years ago

Why does the temperature of boiling water remain the same as long as the heating and boiling continue?

17 years ago

is chloringe flammable is chlorine flammable with a metal?

16 years ago

Due Date: Day 7 [Individual forum]  Review the following Energy Resource Plan outline: I. Introduction: Provide information about why conserving energy is important. II. Renewable vs. Nonrenewable: Briefly distinguish between these two types of energy. I...

16 years ago

which of the following contributed most to the fish population dying during the 1970's

15 years ago

is electric current shared in a series circuit?

15 years ago

5 devices of energy in your home. please tell me. whats the largest source of power in the whole toronto. please help me i`m confused. i cant find good websites.

14 years ago

What's in the coke that stops an egg from bouncing ? is it caffeine

14 years ago

balanced equation: HC2H3O2 + NaOH -> What is the mole ratio of these two substances?

13 years ago

How much energy is required to raise the temperature of 22.8 g of copper from 30°C to 1250°C?

13 years ago

How much energy is required to raise the temperature of 217 g of solid mercury at its freezing point to mercury vapor at its boiling point.

13 years ago

fill in the blanks with these worsd: galaxies gunpppowder guns hubble space telescope mummy sealed tomb the invention of 1990 of the led to the 1996 discovery of new .

13 years ago

which of the following would increase friction. A.Soap B.water C. sand

11 years ago

Two objects or 5kg to 10kg respectively and they're 10m apart. If the distance between them is increased to 20m, what happens to the gravitational force? A. it decreases B. it is doubled C. it increases slightly

11 years ago

which of the following best explains velocity? A.the speed & direction of an object in motion C.only the change of direction of an object in motion D.the direction of an object in motion

11 years ago

which of the following is Not part of testing a hypothesis? A. reasoning B. modeling D. gathering evidence

11 years ago

four forces are being applied to move an object to the left. Force 1 is pushing to the right at 200N. Force 2 is pushing to the left at 500N. Force 3 is pushing to the right at 100N. Force 4 is pushing to the left at 50N. What's the net force acting on th...

11 years ago

make a paragraph about your favorite thing about winter? someone please help

10 years ago

define pendulum bob amplitude oscillation

10 years ago

some have more than a 100 some hav none

9 years ago

What are carbon sources and sinks for (a)The Water cycle (b) The Citrogen cycle (c) The Carbon Cycle

7 years ago

many animal foods like meat and fat are high in energy content. Where did this energy originate. explain by referring to food chains.

7 years ago

How do you calculate gravitational potential energy?

5 years ago

a protostar has a high enough )_____( to become a star volume mass temperature brightness

4 years ago

What mass of rust (Fe2O3) contains 25.0 g of Fe?

4 years ago

What mass of a 65 gram piece of chalcocite (Cu2S) is copper? What is the mass of aluminum in 75 g of Al2O3?

4 years ago

What is the percentage of metal in each of the following? a. ZnS b. Al2O3

4 years ago

A compound is 36.1% water. After drying off the water, the rest is 40.1% oxygen, 39.8% copper, and 20.1% sulfur.

4 years ago

What happens when an Arrhenius acid is mixed with an Arrhenius base?

4 years ago

2NaOH (aq) + H2SO4 (aq) →Na2SO4(aq) + 2H2O(l) 1. What is the Arrhenius acid and Arrhenius base? 2. What are the spectator ions?

4 years ago

(Sodium metal reacts with chlorine gas) 1. During the reaction, electrons are transferred from ______________ to ______________, 2. During transfer, the uncharged sodium atoms become charged sodium ions with the formula ___________. 3. During transfer, th...

4 years ago

Write complete balanced chemical equations for the following reactions. Include states of matter 1. A solution of potassium carbonate reacts with hydrobromic acid. 2. Potassium sulfite powder reacts with sulfuric acid. (Think!) 3. Elemental iron reacts wi...

4 years ago

Limewater is used to test for the presence of carbon dioxide gas. The products of the reaction of Ca(OH)2 with CO2 are calcium carbonate and water. Write a balanced equation for the reaction

4 years ago

Hard Water often contains calcium chloride. The calcium ion in solution can be detected using a solution of sodium phosphate. When a solution of calcium chloride is mixed with a solution of sodium phosphate, a precipitate forms. a. What is the chemical na...

4 years ago

When a piece of sodium metal is tossed into a beaker of water, a violent chemical reaction happens. The sodium metal and water react to form hydrogen gas and sodium hydroxide. The heat of the reaction is so large that the hydrogen gas that is produced ign...

4 years ago

In 3-4 sentences, analyze what type of collision occurs when a tennis racket hits a ball, as shown in the image, and explain how you know. In addition, predict the motion after the collision.

2 years ago

hey bot, Based on the data below, which group of animals are genetically diverse? # of different type of species in the world Birds 9,000+ Bears 8 Horses 350+ Whales 90 (1 point)

2 years ago

A child draws this building. What things have to be considered during construction? Use the science concepts we have talked about (force, load, circuits, conduction, convection, insulators, thermal and electrical energy)

2 years ago

Giant kelp, which can grow up to 60 meters, are known as (1 point) fungi. fungi. vascular plants. vascular plants. nonvascular plants. nonvascular plants. protists.

2 years ago

Which system is most complex? cells organs organ systems

2 years ago

Use the table model to correctly identify the animal in the story. You are walking home from school and an animal jumps out on the sidewalk. You can see it has a backbone, fur and is nibbling on some grass. As you get closer, you see that the animal is a....

2 years ago

Compare and contrast probability sampling methods and non-probability sampling methods. What do they have in common? How are these methods different?

1 year ago

How do fossil fuels play a role in the carbon cycle? A) Fossil fuels are rich in carbon, and burning them releases carbon into the atmosphere. B) Fossil fuels require a lot of carbon to burn, which takes carbon out of the atmosphere. C) Fossil fuels are r...

1 year ago

What is true about what causes an object to stay at rest?(1 point) Responses Objects at rest will stay at rest unless acted upon by balanced forces. Objects at rest will stay at rest unless acted upon by balanced forces. If the forces acting on an object...

1 year ago

Which of the following scenarios best describes an object that is being acted upon by only gravity and friction?(1 point) Responses pedaling a bicycle along a flat road to maintain a constant speed pedaling a bicycle along a flat road to maintain a consta...

1 year ago

Compare and contrast observational studies with experimental studies.

1 year ago

Discuss at least two common issues that can affect the validity of experimental studies. Include an example for each.

1 year ago

The probability that a 30-year-old male in the U.S. will die within one year is about 0.00142. An insurance company is preparing to sell a 30-year-old male a one-year, $70,000 life insurance policy. How much should it charge for its premium in order to ha...

1 year ago

Question Is it possible for two tall pea plants to produce a short pea plant variety? Explain.(1 point) Responses No, one parent must be a short plant for any of the offspring to be short. No, one parent must be a short plant for any of the offspring to b...

1 year ago

Which of the following statements is true? (1 point) Responses Traits that are not similar in identical twins and similar between unrelated people in the same environment are likely inherited. Traits that are not similar in identical twins and similar bet...

1 year ago

Hummingbirds use their beaks to reach into flowers and eat the nectar inside. Which hummingbirds below are most likely to survive in an environment with long, slender flowers?(1 point) Responses all hummingbirds will survive because there is plenty of foo...

1 year ago

Why can't all animals adapt to survive climate change?(1 point) Responses A rapidly changing climate prevents animals from adapting quickly enough. A rapidly changing climate prevents animals from adapting quickly enough. Animal species cannot adapt to ch...

1 year ago

Which of the following is a true statement?(1 point) Responses It is not feasible to replace our energy needs with renewable sources overnight. It is not feasible to replace our energy needs with renewable sources overnight. Carbon emissions are a localiz...

1 year ago

Vascular plants can be divided into groups based on A) color B) the presence or absence of seeds C) size D) the presence or absence of flowers

1 year ago

miss sue i went on this website and it said fuel fossel is most useful power source in Toronto but i still cant find the 5 devices that use energey in my house

14 years ago

thank you so much i didn't notice that because my niece was crying and i was in a rush thank you Ms.Sue

14 years ago

What is the "A"

13 years ago

what is a component that is synthesized by photosynthetic producers and on which all aerobic consumers depend on?

12 years ago

if john travels 2387 miles in 2 days. What's his average speed per hour. A.49.7mph B. 1193.5mph C. 73.7mph

11 years ago

to put your favorite thign about winter in paragraph

10 years ago

i have ideas i just need help putting it in paragraph like i like when it snows holiday breack new years snowball snowman sleeding

10 years ago

can you post the paragraph here plese?

10 years ago

then what?

10 years ago

pythogores theorem is sum in lenght= total lengt of two sides soory if it is wrong 40 years back i was learning this and now i am 67 years

10 years ago

I think it's A as well.

10 years ago

my home

9 years ago

plants

9 years ago

I not sure what they are asking maybe they want you to give examples.

9 years ago

science

8 years ago

No

8 years ago

7 bats

7 years ago

i meant what are sources and sinks for, not carbon sources and sinks

7 years ago

check if im right ; meats and fat are high in energy content because in the food chain the energy passes on and the animals get bigger which they have high energy content inside those animals.

7 years ago

Isn't it bc if you look at a activity series, lithium is very reactive while silver is at the bottom. So silver would take longer to react making it easier to recover vs lithium that will mix into the solution and possibly disappear making it very hard to...

6 years ago

Which of these is responsible for ridding the body of waste? A) nervous system B) excretory system C) circulatory system D) reproductive system

5 years ago

what are the answer choices

5 years ago

what is the empirical formula

4 years ago

sheesh

4 years ago

Which biome best supports animals that feed mostly by grazing on grasses and small shrubs?(1 point)

2 years ago

Which biome best supports animals that feed mostly by grazing on grasses and small shrubs?(1 point) Responses polar desert polar desert tropics tropics mixed forests mixed forests savanna

2 years ago

Which describes a primary role of the pioneer species in an ecosystem?(1 point) Responses break down rock into soil break down rock into soil protect other species from danger protect other species from danger provide food for small animals provide food f...

2 years ago

What happens after coral is bleached?(1 point) Responses The coral is susceptible to starvation. The coral is susceptible to starvation. The coral releases algae into the ocean. The coral releases algae into the ocean. The coral produces peroxides. The co...

2 years ago

The most biodiverse ecosystem in the world is likely a(1 point) Responses taiga. taiga. tundra. tundra. coral reef. coral reef. cold desert.

2 years ago

Marine biologist Dr. James Estes researched sea otters and their habitats in the Aleutian Islands of the North Pacific Ocean. Sea otters feed on animals such as crabs and urchins. Islands with sea otters contained a lot of kelp, a seaweed that is an impor...

2 years ago

Dolphins are animals that live in water, but they do not have gills. What might this suggest about dolphins?(1 point) Responses They have another structure to obtain oxygen. They have another structure to obtain oxygen. They do not need to release carbon...

2 years ago

Which of the following is one response to higher temperatures in a habitat?(1 point) Responses more movement more movement more fat storage more fat storage more sweating more sweating thicker fur thicker fur

2 years ago

Why is fever an effective response to pathogens?(1 point) Responses It can remove pathogens from the body. It can remove pathogens from the body. It can signal the body to run. It can signal the body to run. It can signal the body to fight. It can signal...

2 years ago

Beavers, large members of the rodent family in North America, are often referred to as “ecosystem/keystone engineers” by wildlife managers. Ecosystem engineers are described as animals that create, alter, or destroy a habitat. Beavers contribute to river...

2 years ago

A bird-watcher sees a small yellow bird in a tree. Explain to the bird-watcher how he can use a dichotomous key to identify the bird. Assume he does not know anything about dichotomous keys. Then, write two steps of a dichotomous key that would be helpful...

2 years ago

Rainbow trout live in the rivers and streams of upstate New York. Rivers in this area are cold and have strong currents. If temperatures fall over time because of climate change, what is one variation that would likely help the trout to survive? Why? Writ...

2 years ago

Which one of the following animals is most likely to be a keystone species, based on the food web provided? (1 point) Responses Mouse Mouse deer deer frog frog grasshopper

2 years ago

thank you!

2 years ago

No. The formula is P(S1) · S1 + P(S2) · S2

1 year ago