Dirty snowballs
Source: This question is taken from the Everyday Science
Nucleotide
Chromatids
Tertiary Consumer
Biodegradable
Longitudinal Waves
Groups
Secondary Consumers
Osmosis
Deforestation
Water Vapour
Replication
Testa
Gene
Non-biodegradable
Speed
Iron Rock
Radiation
Decomposers
Photolysis