Roundworms reproduce sexually, and nematodes are millimeter-sized roundworms. Given these facts, what reproduces sexually among the following options: - nematodes - h2o - viruses - insects - humans - bacteria - ferns - Most plants
nematodes

Tidal energy can be used to produce electricity, and ocean thermal is energy derived from waves and also from tidal waves. Given these facts, ocean thermal can be used to produce among the following options: - Temperature - electricity - warmth - steam - precipitation - friction - food and shelter - sun's heat
electricity

Insulated material can be used for keeping warm, and hair is a natural insulator whether the it is warm or cool. Given these facts, what can keep you warm among the following options: - toenails - warmth - skin - nails - wings - fingers - fur - hair
hair