when it comes to pest control, we often feed on other insects that can be harmful to you. one good example is my best friend, dragonfly, and his family. they are well-known fly and mosquito hunters. their contribution is worth $4.5 billion every year.
now let’s talk about fruit. my friends such as bee and butterfly help a plant or tree produce fruit or seeds. without this pollination service, fruit would become scarce and expensive. you would probably be able to taste it only on christmas day or birthdays. their pollination service is worth about $3 billion every year.
last but not least, you can save $380 million every year thanks to our fertilization of your farmlands. take my friends, dung beetle and his family, as an example. they clean up the earth’s soil by collecting all kinds of animal wastes. earthworms also eat soil and make it richer. all this helps your crops grow better.

빨갛게 칠한 부분에서요

helps 때문에 그런데요...

all this helps 를 모든 이러한 도움들로 하면.. 문장구조가 좀 이상해지고요..
helps를 동사로보면.. 모든 이러한것들은 돕는다 너의 작물이 잘자라도록..
이란 5형식 문장이되죠.. 그래서 5형식 같긴한데요
그럼 all this 는 복수인데 help라고 쓰여야 맞는거 아닌가요..?
every 처럼 all 도 단수취급인가요..?