Issue: 1970, the US Congress placed marijuana in Schedule I of the Controlled Substances Act because they considered it to have “no accepted medical use.” Since then, 33 of 50 US states and DC have legalized the medical use of marijuana.

Arguement 1(Pro): Proponents of medical marijuana argue that it can be a safe and effective treatment for the symptoms of cancer, AIDS, multiple sclerosis, pain, glaucoma, epilepsy, and other conditions. They cite dozens of peer-reviewed studies, prominent medical organizations, major government reports, and the use of marijuana as medicine throughout world history.

Arguement 2 (contra): Opponents of medical marijuana argue that it is too dangerous to use, lacks FDA-approval, and that various legal drugs make marijuana use unnecessary. They say marijuana is addictive, leads to harder drug use, interferes with fertility, impairs driving ability, and injures the lungs, immune system, and brain. They say that medical marijuana is a front for drug legalization and recreational use.

Conclution: in our opinion, the use of marijuana is allowed as long as it is in accordance with existing procedures and permits with usage and usage limits

Proponents of social networking sites say that the online communities promote increased interaction with friends and family; offer teachers, librarians, and students valuable access to educational support and materials; facilitate social and political change; and disseminate useful information rapidly.

Opponents of social networking say that the sites prevent face-to-face communication; waste time on frivolous activity; alter children’s brains and behavior making them more prone to ADHD; expose users to predators like pedophiles and burglars; and spread false and potentially dangerous information. 

59% of students with access to the Internet report that they use social media to discuss educational topics and 50% use the sites to talk about school assignments. After George Middle School in Portland, Oregon, introduced a social media program to engage students, grades went up by 50%, chronic absenteeism went down by 33%, and 20% of students school-wide voluntarily completed extra-credit assignments. A Jan. 2015 study published in the Journal of Applied Developmental Psychology said college freshman should use social networking sites to build networks of new friends, feel socially integrated at their new schools, and reduce their risk of dropping out. 

31% of teens say that using social media during homework reduces the quality of their work. Students who used social media had an average GPA of 3.06 while non-users had an average GPA of 3.82. Students who used social media while studying scored 20% lower on tests. College students’ grades dropped 0.12 points for every 93 minutes above the average 106 minutes spent on Facebook per day. One study found that in schools which introduced a ban on cell phones, student performance improved 6.41%. Another found that grades began a steady decline after secondary school students reached 30 minutes of daily screen time. After four hours, average GPAs dropped one full grade.

Issue : The US Department of Agriculture (USDA) Animal and Plant Health Inspection Service (APHIS) reports the number of animals used for research each year, though it excludes animals not covered by the AWA. For fiscal year 2010 (the latest year for which data are available as of Oct. 11, 2013), 1,134,693 animals were reported. Since the data excludes cold-blooded animals, farm animals used for food, and birds, rats, and mice bred for use in research, the total number of animals used for testing is unknown.
 Animal testing in the United States is regulated by the federal Animal Welfare Act (AWA), passed in 1966 and amended in 1970, 1976, and 1985. The AWA defines “animal” as “any live or dead dog, cat, monkey (nonhuman primate mammal), guinea pig, hamster, rabbit, or such other warm blooded animal.” The AWA excludes birds, rats and mice bred for research, cold-blooded animals, and farm animals used for food and other purposes.

Pro : Animal research has contributed to major advances in treating conditions such cancer, brain injury, leukimia, and the other.  Animals must be used in cases when ethical considerations prevent the use of human subjects. When testing medicines for potential toxicity, the lives of human volunteers should not be put in danger unnecessarily.

Contra : According to Humane Society International, animals used in experiments is cruel and inhumane. Animals are very different from human beings and therefore make poor test subjects. Besides, animal tests may mislead researchers into ignoring potential cures and treatments.

Conclusions : In our group opinion, we think that scientists can use different methods other than animal testing because it can harm animals. Besides, the structure of human body and animals often different so its not effective.

While giving homework to pupils in secondary schools is generally seen as a good idea, some don't think that kids in primary schools should have to do it.
For the last 100 years or so, experts have been trying to work out if it is beneficial to give homework to kids in primary schools.

In the UK, the government says it's up to the head teacher to decide whether or not their school will set extra work like this.

Pro:
Homework improves student achievement.

Studies show that homework improves student achievement in terms of improved grades, test results, and the likelihood to attend college.

Research published in the High School Journal indicates that students who spent between 31 and 90 minutes each day on homework “scored about 40 points higher on the SAT-Mathematics subtest than their peers, who reported spending no time on homework each day, on average.” [6]

On both standardized tests and grades, students in classes that were assigned homework outperformed 69% of students who didn’t have homework. [7] A majority of studies on homework’s impact – 64% in one meta-study and 72% in another – showed that take home assignments were effective at improving academic achievement. [7][8]

Research by the Institute for the Study of Labor (IZA) concluded that increased homework led to better GPAs and higher probability of college attendance for high school boys. In fact, boys who attended college did more than three hours of additional homework per week in high school. [10]

Homework helps to reinforce learning and develop good study habits and life skills.Everyone knows that practice makes perfect. Students typically retain only 50% of the information teachers provide in class, and they need to apply that information in order to truly learn it. [11]Homework helps students to develop key skills that they’ll use throughout their lives, such as accountability, autonomy, discipline, time management, self-direction, critical thinking, and independent problem-solving. [12][13][14][15]A study of elementary school students who were taught “strategies to organize and complete homework,” such as prioritizing homework activities, collecting study materials, note-taking, and following directions, showed increased grades and positive comments on report cards. [17]Research by the City University of New York noted that “students who engage in self-regulatory processes while completing homework,” such as goal-setting, time management, and remaining focused, “are generally more motivated and are higher achievers than those who do not use these processes.” [18]

Cons:
Too much homework can be harmful.

A poll of high school students in California found that 59% thought they had too much homework. [24] 82% of respondents said that they were “often or always stressed by schoolwork.” [28]

Alfie Kohn, an education and parenting expert, said, “Kids should have a chance to just be kids and do things they enjoy, particularly after spending six hours a day in school. After all, we adults need time just to chill out; it’s absurd to insist that children must be engaged in constructive activities right up until their heads hit the pillow.” [27]

High-achieving high school students say too much homework leads to sleep deprivation and other health problems such as headaches, exhaustion, weight loss, and stomach problems. [29]

Excessive homework leads to cheating: 90% of middle school students and 67% of high school students admit to copying someone else’s homework, [30] and 43% of college students engaged in “unauthorized collaboration” on out-of-class assignments. [31] Even parents take shortcuts on homework: 43% of those surveyed admitted to having completed a child’s assignment for them. [32]