The earliest introduction of zebra mussels in united states probably occurs in 1986.
At that time, commercial vessels from Europe went to north America as a place for freshwater ballast stowaway. They merchants then introduced zebra mussels to the market and it gained popularity ever since. They also introduced zebra mussels population in local lakes and let them reproduce there.
Answer: It helped to abolish slavery.
Explanation:
The Vermont constitution was the constitution adopted by the State of Vermont, this constitution brought about a government and state laws. It was first written in 1777, 6 months after Vermont declared itself an independent state, this constitution was first amended in 1786 as recommended by the Vermont Council of Censors. The constitution consists of 2 chapter (I and II)
•Chapter I is divided into 21 articles.
• Chapter II contains features such as power, legislative, executive, judiciary department, voter's qualification, elections, oath, impeachment, militia, provisions, amending and schedule.
Answer:
Myelination
Explanation:
Myelination is the process of the formation of the myelin sheath around the neurons. The myelin sheath is composed of the fats and few proteins and since fat is present in the high amount therefore the myelin sheath provides insulation to the neuron.
The myelin sheath increases the speed and efficiency of the electrical impulse transmission in the neurons. In the given question, the changes in the neurons taking place during the development process is due to the myelination process which increase efficiency.
Thus, myelination is correct.
Explanation:
<em>I </em><em>hope </em><em>this </em><em>will </em><em>help </em><em>U </em><em>:-)</em><em>:-)</em><em>:-)</em>
Humans affect the water cycle in numerous ways. Some of our actions purposefully affect the water cycle and other human activities have unintentional consequences on the water cycle.We pull water out of the ground in order to use it. We change the flow of water using irrigation. We dam lakes and rivers for electricity and to create manmade lakes and ponds. The Colorado River in the US no longer reaches the ocean at times because humans have altered it so much.Climate change is causing numerous changes to the water cycle. Sea levels are rising in some areas and dropping in others, glaciers are retreating and disappearing affecting rivers, droughts are happening more frequently in some regions and floods in other areas, coastlines are changing and some islands are disappearing, the polar ice cap is melting, and so forth.
The use of pesticides, herbicides, and excess nitrogen for farming runs off into rivers and streams and pollutes groundwater. Deforestation, whether for timber or to clear land for agriculture or development, increases runoff. Certain emissions from industry cause acid rain .
