Answer:
Roundworms can grow up to 3 meters and can be so small they can't be seen with the naked eye. Some roundworms have hooks to cling to certain body parts without being carried away by blood or other fluid. Roundworms are covered in a strong, but flexible, covering
Explanation:
From what i have read up on in the past, They can but they don't really think with a "voice" in their head if that makes sense.
Qualitative data is when you can see the ecosystems. the importance of biodiversity for all sustainable ecosystems is biodiversity boosts ecosystem productivity whether each species, no matter how small, all have an important role to play.
An open circulatory system simply
means that the blood flows out of vessels and into the spaces or sinuses. Invertebrates,
insects and crustaceans has an open circulatory system where pump blood goes
into a hemocoel and diffusing back to the circulatory system between cells. In
other animals, the heart pumps the blood into the body cavities, spaces or
sinuses, where the blood surrounds the tissues.
