You are presented with the question "What produces amniotic eggs?" and the following answer choices:  - goats  - crocodiles  - dogs  - sperm  - animals  - sharks  - tortoises  - lizards  Now knowing that reptiles are a class of tetrapod vertebrates that produce amniotic eggs and all lizards are reptiles, choose the best answer.
lizards


You are presented with the question "what releases oxygen during the day but not during the night?" and the following answer choices:  - h2o  - tulips  - Oak  - humans  - flowers  - Trees  - Conifers  - gravity  Now knowing that plants release oxygen during the day but not during the night and bulbs planted over the years include tulips and daffodils, choose the best answer.
tulips


Q: You are presented with the question "What against the seed coat causes a root to emerge from a seed?" and the following answer choices:  - warmth  - calcite  - lipids  - an ion  - fibrous  - waves  - heat  - acidity  Now knowing that the force of water against the seed coat causes a root to emerge from a seed and most waves are formed from the force of wind against the water, choose the best answer.
A: waves


Question: You are presented with the question "How can an animal learn actions?" and the following answer choices:  - movement  - Chemical energy  - by fighting  - through play  - by eating  - when they sleep  - stamina  - Riding a bike  Now knowing that behaviors can be learned through play and kids imitate adult actions and behaviors, choose the best answer.
Answer: through play


*Question*
You are presented with the question "What contributes to global warming?" and the following answer choices:  - using wind farms  - recycling  - burning coal  - Greenhouse gases  - operating an automobile  - chlorofluorocarbons  - Greenhouse gasses  - nuclear energy  Now knowing that operating an automobile usually requires fossil fuels and global warming is caused largely by fossil fuel use, choose the best answer.
**Answer**
operating an automobile


(Q).
You are presented with the question "what often infects bacteria?" and the following answer choices:  - major threat to health  - h2o  - simplest known organisms  - Food poisoning  - mercury  - humans  - By wind and rain  - microorganisms  Now knowing that viruses often infect bacteria and viruses Viruses are the simplest organisms known, choose the best answer.
(A).

simplest known organisms