You are presented with the question "what does a telephone help humans do over long distances?" and the following answer choices: - send files - Transfers energy - lowered energy cost - hold hands - extremely important - conveying and receiving messages - watch television - A transportation fuel Now knowing that atelephone is used for communication by humans over long distances and effective communication requires skills in conveying and receiving messages, choose the best answer.
conveying and receiving messages
You are presented with the question "What becomes hot when exposed to a source of heat?" and the following answer choices: - rubber - wool - an object - copper - paper - sugar - the skin - our star Now knowing that if a thermal conductor is exposed to a source of heat then that conductor may become hot and copper is a great thermal conductor, choose the best answer.
copper
Q: You are presented with the question "gases released during the use of coal, oil, and natural gas causes " and the following answer choices: - warming glow - abundance of types organisms - heat energy - stabilized temperatures - global warming - deforestation - chemical reaction - kinetic energy Now knowing that gases released during the use of fossil fuels causes global warming and fossil fuels are coal, oil, and natural gas, choose the best answer.
A: global warming
Question: You are presented with the question "What do microspores develop into?" and the following answer choices: - members of their own species - raindrops - female gametophytes - Chlorophyll - major threat to health - stems - leaves - it keeps an organism warm Now knowing that female gametophytes produce eggs inside the ovaries of flowers and microspores develop into female gametophyte that produces egg in archegonium, choose the best answer.
Answer: female gametophytes
*Question*
You are presented with the question "What can be used as an energy source by devices?" and the following answer choices: - friction - sunlight - heat - sun's heat - Light - cells - wind - oxygen Now knowing that electricity is used as an energy source by electrical devices and sunlight can be converted to electricity, choose the best answer.
**Answer**
sunlight
Q: You are presented with the question "What is an example of an animal that lacks a respiratory and excretory system?" and the following answer choices: - Dog - Human - alpacas - cacti - Starfish - Leeuwenhoek - Elephants - cows Now knowing that echinoderms lack respiratory and excretory systems and starfish and sea urchins are also echinoderms, choose the best answer.
A: Starfish