Question

Don't write unnecessary things​

Answer 1

Answer:

(6) both first and second

(7) Same as above

Hope it helps you

Answer 2

Answer:

An ecosystem is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life. Ecosystems contain biotic or living, parts, as well as abiotic factors, or nonliving parts. ... Ecosystems can be very large or very small.

I didn't