Answer:
a. eukaryotes
b. unicellular
c. autotrophs; heterotrophs
Explanation:
Protists represent a separate kingdom of eukaryotic organisms (ie., organisms whose cells have a nucleus). The most important features of protists include: 1- they are unicellular organisms, 2-contain mitochondria, 3-can be parasites, and 4-generally live in optimal conditions in moist or aquatic environments. In the past, protists were divided into Protozoa (animal-like organisms) and Protophyta (plant-like organisms), which nowadays we know are heterotrophic (also often parasitic) and photosynthetic protists, respectively.
In serial or tandem staging<span> schemes, the first </span>stage<span> is at the bottom and is usually the largest, the </span>second stage<span> and subsequent upper </span>stages<span> are above it, usually decreasing in size. In parallel </span>staging<span> schemes solid or liquid </span>rocket<span> boosters are used to assist with lift-off.</span>
Right amount of water is the secret.
Recycle, Pollution control, Organic food, Minimize plastic, there is a lot more
It breaks down and combines with water, air, and organic matter