Any book you read on the Origin of Life, especially today, will nonchalantly state how "easy" it is to make amino acids that eventually turn into proteins (and yet we don't understand Amyloidosis and how easily and inexplicably living organisms can fail to process the proteins), and how "easy" it is for microscopic dust and minerals to cling together and form planets (this one might be acceptable, since in zero gravity we can see how easily a water spill turns into a spherical liquid bubble, and pebbles collect to form a spherical mass), and how "easy" it was for Earth to not be too hot, not be too cold, not be too massive, not be too wet, not be too dry, not be too sunlit, not be too dark, not be too.... I don't knock it. The adage that "getting there is half the fun" is the fuel for scientific discovery. And as Proverbs 25:2 states: It is the glory of God to conceal a matter, and the glory of kings to fathom a matter כְּבֹ֣ד אֱ֭לֹהִים
If you ever read Edward O. Wilson (a biologist and writer) you will know that ants are important. Planet earth cannot exist without them. I suggest Journey to the Ants: a Story of Scientific Exploration, if you want to know more. It's written for any audience and it's a fun read. One animal I liked observing as a very small child was the land snail (there are many species, but I am not as educated as Wilson, so I'll keep it at "snail" here.) In my summer home in the Penedès region, my neighbor would invite me to go snail picking with him before sunrise, and I loved it. The reward was a delicious cargolada at the end of that week. Yes, I eat just about everything, and snails are delicious. Like ants, snails also have an important role on earth. Without them, countless life forms would die: birds, mammals and reptiles. And they are important to the soil, the rich dirt that plants need to grow. Basically, every animal you can think of has carved out its niche