*Question*
If platypus and Echidna are mammals that reproduce by laying eggs, then platypus and Echidna are mammals that reproduce by what? Answer choices: - hospital visits - cesarean sections - organs - warm-blooded - fur and fat - live birth - competition - laying eggs
**Answer**
laying eggs

*Question*
If telephones are used for communication by two people by transmitting waves, then what are used for communication by two people by transmitting waves? Answer choices: - satellites - A Greek letter - Morse code - mitosis - telephones - energy - electricity - photosynthesis
**Answer**
telephones

*Question*
If mechanoreceptors sense differences in temperature or pain, then what senses differences in temperature or pain? Answer choices: - h2o - the body's largest organ - dead nerve cells - Electric devices - heat - the skin - sensory neurons - mechanoreceptors
**Answer**
mechanoreceptors

*Question*
If most protists are able to move, then which can move? Answer choices: - Raft - light energy - vehicles - insects - protists - bicycle - animals - an object
**Answer**
protists