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3 years ago

The water hyacinth was a major weed in Australian

1 answer:

6 0

Water hyacinth can fully cover lakes and wetlands, displacing native aquatic species, reducing fish oxygen levels, and providing optimal habitat for disease-carrying mosquitoes. Water hyacinth infestations can obstruct river transportation, fishing, damage bridges, and clog dams.

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What causes an electric current in a wire?

nexus9112 [7]

The correct answer is B. Electrons flow because of electrical attraction and repulsion.

7 0

4 years ago

It is important to understand the differences between chemical and physical changes. Chemical changes result in new substances,

sergiy2304 [10]

Explanation:

Other characteristics of these changes are:

Physical changes are easily reversible but chemical changes are not.

Physical changes involves no change in mass like chemical changes.

Physical changes require little energy unlike chemical changes.

Water turns to steam when boiled over a Bunsen burner Physical change

This is a physical change of state. It is called evaporation. Here, hydrogen bonds between each water molecules are broken and they turn to gases in steam phase.

H₂O $_{l}$ → H₂O $_{g}$

Carbon combines with oxygen to form carbon dioxide gas Chemical change

This is a typical chemical change":

C + O₂ → CO₂

A new product is formed and this reaction is not easily reversible.

Water breaks down into hydrogen and oxygen gases. Chemical change

This is also a chemical change in which new products are formed:

H₂O → H₂ + O₂

Limestone breaks down into lime and carbon dioxide when heated Chemical change

This is a chemical change as new product forms:

CaCO₃ → CaO + CO₂

Learn more:

Chemical change brainly.com/question/9388643

#learnwithBrainly

5 0

3 years ago

Is any force exerted on the vertical sides of the loop that you used in the experiment and how does it affect the apparent mass?

lorasvet [3.4K]

2. How should employers respond to K to 12 graduates who apply for vacant positions in
3. What were the perceived disadvantages of K to 12 graduates pcompared to college students?
4. What factors could give K to 12 graduates an advantage in the labor market?
Discussion Questions
1.
What is the dilemma K to 12 graduates face when applying for a job?
their company? Pa help asap po

5 0

3 years ago

1. In order to change the speed of a wave, you must change something about the medium. T or F

Slav-nsk [51]

Answer:

1) False

As the frequency can be defined as the number of times wave formed per unit time or in other words the numbers of a combination of a crest and trough forms. So the frequncy of a sound wave depends upon the source producing sounds

2)False

Diffraction is the process in which a light wave bends when they pass through a specified medium such as water.

3)True

hope it helps

7 0

3 years ago

Explain and give an example of newtons 3rd law of motion

NikAS [45]

The newton's 3rd law of motion states for every action there is always an equal but opposite reaction.

For example'

Whenever an interaction occurs between two objects, each object exerts the same force on each other , but in the opposite direction and for the same length of time.

5 0

3 years ago