What does this mean 天魔 ? And what language is it?

Describe three methods that can be used to improve photosynthesis

Ou work as a cashier for a grocery store and earn $5 per hour. you also mow lawns and earn $10 per hour. you want to earn at least $50 per week, but would like to work no more than 10 hours per week. which system of inequalities, along with y ? 0 and x ? 0, would you use to solve the real-world problem?

Como se chama o presidente de angola?