Aqueduct carries water over a long distance.
Pioneer species are the first organisms to live in an uninhabited area.
Answer:
The answer is both the first (Cause disease) and second (Cause algal blooms)
Explanation:
Protists may cause disease and even kill living things. Also, algal blooms are essentially protists but have chloroplasts- which plays a part in them being harmful.
Part A done, you will find the answers below.
<u>Hope this helps!</u>