Answer the following question given this paragraph: Caecilians are most closely related to salamanders. As you can see from Figure below , they have a long, worm-like body without legs. Caecilians evolved from a tetrapod ancestor, but they lost their legs during the course of their evolution. Q: What ancestors did caecillians evolve from? Choices: - ornithopod - arthropod - hominid - tetrapod A:
tetrapod
Answer the following question given this paragraph: Minerals are made by natural processes. The processes that make minerals happen in or on the Earth. For example, when hot lava cools, mineral crystals form. Minerals also precipitate from water. Some minerals grow when rocks are exposed to high pressures and temperatures. Q: What is formed when hot lava cools? Choices: - hydrogen crystals - lava rock - magma crystals - mineral crystals A:
mineral crystals
Q: Answer the following question given this paragraph: Flatworms can be free-living or parasitic. Tapeworms are parasitic flatworms. Q: Tapeworms are what type of flatworms? Choices: - single-celled - endogenous - symbiotic - parasitic A:
A: parasitic
Question: Answer the following question given this paragraph: Oxygen has 6 valence electrons in its ground state. Remember that ground state refers to the neutral atom in which the electrons occupy the lowest possible energy positions. Oxygen is two electrons away from being isoelectronic with the nearest noble gas. Oxygen will therefore form ions by gaining two electrons to become isoelectronic with neon, as shown below:. Q: What kind of energy positions do electrons occupy during ground state? Choices: - closest energy positions - relative energy positions - highest energy positions - lowest energy positions A:
Answer: lowest energy positions
*Question*
Answer the following question given this paragraph: Centripetal Force is an umbrella term that refers to any force that makes something move in a circle. Examples of forces that can be centripetal forces are as follows: Gravity (the gravity between the Earth and Sun causes the Earth to go in a circle), Friction (the friction force between a car's tires and the road causes the car to turn), Tension (when swinging a bucket around in a circle by holding onto the string, the tension of the string is the centripetal force). Q: What do you call any force that makes something move in a circle? Choices: - cyclical - tangential force - momentum - centripetal force A:
**Answer**
centripetal force
Answer the following question given this paragraph: Cnidarians such as jellyfish have radial symmetry. Flatworms and roundworms, which you will read about next, have bilateral symmetry. Q: What are jellyfish and other cnidarian's stingers called? Choices: - prokaryotes - necrocytes - phenocrysts - nematocysts A:
nematocysts