A student used a microscope to study four members of the phylum ciliophora. members of this phylum move when propelled by hundreds of tiny cilia. although these organisms belong to the same phylum, they are classified as different- a. families
b. species
c. kingdoms
d. orders

Could someone me with number one you

For the strategies below, decide whether they are best described as demand-side solutions or supply-side solutions to meeting human needs for fresh water. remember that a demand-side solution reduces demand for fresh water, whereas a supply-side solution increases the supply of fresh water. (a) damming a river to create a reservoir (b) desalinating seawater (c) a nation invading a neighboring country to access their rivers (d) raising water prices for consumers and businesses (e) providing tax breaks for companies that use less water (f) replacing inefficient irrigation with more-efficient drip irrigation to grow crops (g) requiring low-flow showerheads in all new homes

Describe characteristics of a good respitory surface