Q: Producers at the base of ecological food webs are also known as? Read this paragraph and choose the correct option from the provided answers: Choices: - endoscopic - symbiotic - mutualistic - autotrophic A:
autotrophic

Q: What happens to the total energy of the system when heat is positive? Read this paragraph and choose the correct option from the provided answers: When heat is positive, the total energy of the system is increasing. Choices: - nothing - it remains constant - it decreases - it increases A:
it increases

Q: Q: Which system consists of all the nervous tissue that lies outside the central nervous system? Read this paragraph and choose the correct option from the provided answers: The peripheral nervous system consists of all the nervous tissue that lies outside the central nervous system. It is connected to the central nervous system by nerves. It has several divisions and subdivisions that transmit nerve impulses between the central nervous system and the rest of the body. Choices: - auxiliary nervous system - spinal cord - cerebral cortex - peripheral nervous system A:
A: peripheral nervous system

Question: Q: What novelties can also arise when structures that originally played one role gradually acquire a different one? Read this paragraph and choose the correct option from the provided answers: Choices: - mutation - interactions - reproduction - evolutionary A:
Answer: evolutionary

*Question*
Q: Plants, algae and bacteria are all examples of what type of organism? Read this paragraph and choose the correct option from the provided answers: Photosynthetic organisms include plants, algae, and some bacteria. Choices: - microbes - unicellular - skeletal - photosynthetic A:
**Answer**
photosynthetic

*Question*
Q: What does a healthy immune system fight off? Read this paragraph and choose the correct option from the provided answers: Eat well, get enough sleep, and be active every day. These healthy lifestyle choices will help keep your immune system healthy so it can fight off respiratory infections and other diseases. Choices: - microorganisms and other dieases - respiratory and other dieases - bacteria and viruses - infections and other dieases A:
**Answer**
infections and other dieases