Questions by Danielleontiev

Questions by Danielleontiev

When ultraviolet rays from the Sun reach the upper layers of the atmosphere, they sometimes react with oxygen gas. This starts a process that can eventually produce ozone. In what way is this process beneficial

asked Mar 9, 2020

1 answer

1 vote

235k views

Social media is the main form of communication for most of the worlds younger people. Social media can present problems for law enforcement agencies because of freedom of speech issues, privacy concerns

asked Mar 2, 2020

1 answer

4 votes

204k views

In the human body which systems function primarily to defend the body against disease?

asked Sep 3, 2019

2 answers

4 votes

35.7k views

What does mechanical weathering do?

asked Aug 28, 2019

1 answer

3 votes

234k views

Which type of immunity defends against any type of invader?

asked Apr 4, 2019

1 answer

1 vote

82.0k views

Suppose you believe your unknown compound is NaOH, and you prepare 20 mL of a 0.1 mol/L solution of it. The stockroom provides a 0.2 mol/L HCl solution as the titrant. What volume of HCl (in mL) is needed

asked Feb 15, 2019

1 answer

4 votes

64.6k views

The question says: Derek is peeling potatoes for his large scout troop. He needs to peel a total of 85 potatoes. If he peels two potatoes in a minute, and he has already peeled 13 potatoes, how much longer

asked Sep 7, 2018

1 answer

5 votes

137k views

Which developments most led to changes in the level of presidential power during the 20th century? A. The elimination of many high-level bureaucratic positions B. Congress's consistent refusal to approve

asked Jun 2, 2018

2 answers

2 votes

221k views

The school band wishes to raise a minimum of $800 by selling tickets to their holiday concert. They make $3 from each student ticket and $5 from each adult ticket. Let x represent the number of student

asked Sep 22, 2017

2 answers

3 votes

108k views

A chocolate factory produces mints that weigh 10 grams apiece. The standard deviation of the weight of a box of 10 mints is 3 grams. You buy a box of mints that weighs 95 grams. What is your confidence

asked Sep 13, 2017

2 answers

0 votes

188k views

Which statements describe results of the "greenhouse effect" this is a multiple choice answere .#1 higher temperatures #2 expanding ice caps #3 penguins losing their natural habitat #4 rising sea levels

asked Sep 11, 2017

1 answer

1 vote

129k views

Which best describes Francis Drake? a. He wrote books about his discoveries in astronomy. b. He was the first Englishman to sail around the world. c. He introduced tobacco to Virginia. d. He was a leader

asked Nov 18, 2016

2 answers

5 votes

2.2k views

In the antarctic region, biologists noticed a sudden drop in the death rate of penguins. How will this affect their population?

asked Feb 13, 2016

2 answers

1 vote

99.0k views

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