The answer is
a hope it helps
Since bees help pollinate plants, a lack of pollination could prevent certain species of vegetation from growing. Therefore, the plants could be driven into extinction. These plants act as a food source to many animals, so if the animals have nothing to eat, they'd die off as well. Consequently, our own food supply of crop and animal would decrease.
Answer:1. What did you do at the weekend?, 2.How was your weekend?, 3. oh, why was that?, 4. What did you do on Saturday night?
Explanation:pretty easy, just see what makes sense.
Compound sentence (even though technically he also made the sentence longer)