Which of the following is a sustainable practice?

a. leaving trash bags at a local park
b. flushing medicine down the toilet
c. throwing jars in the trash can
d. using only geothermal energy

The following image is of a diatom. it lives in water and gets food from photosynthesis. it is encased in a hard shell made of something similar to glass or sand . a diatom is a(n) because it has a) multi-celled organism; specialized parts. b) vertebrate; a skeleton. c) insect; an exoskeleton. d) single-called organism; only one cell.

The body is protected against harmful flu viruses by

Draw the structure of dna nucleotide with adenine as nitrogenous base