Bees! Bees!
I guess you know a lot about bees, but most of people just know that bees are dangerous. But no, you are wrong!!!
Bees are insects that are very good. Bees have stings that makes their enemy hurt. But they only make you hurt with the sting if you bothers bees. Bees are also called honeybees. They eat honey and make seed. They also collect pollen for their babies. Their enemies are spiders, wasps (hornets), the people and insecticide. The most fearsome enemies are people. People use insecticide to kill bees. That is why bees are dying outside of the bee hive. It's also the reason why they sting us. You have to watch out of bees, and save them as well.

Julie: Their enemies are spiders, wasps (hornets), and also people and insecticide.
Correct: Their enemies are spiders, wasps (hornets), the people and insecticide.
Explanation: You can join them in one sentence using the conjunction 'and'.

Julie: And that is why bees are dying outside of the bee hive.
Correct: That is why bees are dying outside of the bee hive.
Explanation: Separate the sentence from another one if it can stand alone. Don't always use 'and' in every sentence.

Julie: Also that is the reason that they sting us.
Correct: It's also the reason why they sting us.
Explanation: Take note how the correct sentence is formed. You can use 'why' instead of 'that' because it is appropriate to use.

Julie: I would say you have to watch out of bees, but also have to save bees like saving you!!!
Correct: You have to watch out of bees, and save them as well.
Explanation: Would is the past form of will. It is used to say what might happen if something else 

Hello Julie! Keep on practicing your sentence construction skill.:)