Answer the following question given this paragraph: Adult sea stars and other echinoderms have obvious radial symmetry. What evidence supports the claim that echinoderms evolved from an ancestor with bilateral symmetry?. Q: Adult sea stars have what kind of symmetry? Choices: - hydrological symmetry - skeletal symmetry - biological symmetry - radial symmetry A:
radial symmetry
(Question)
Answer the following question given this paragraph: Q: Glucose, fructose, and other sugars that have six carbons are called what? Choices: - alcohols - fluxes - catalysts - hexoses A:
(Answer)
hexoses
Ques: Answer the following question given this paragraph: An electromagnetic wave begins when an electrically charged particle vibrates. The Figure below shows how this happens. A vibrating charged particle causes the electric field surrounding it to vibrate as well. A vibrating electric field, in turn, creates a vibrating magnetic field. The two types of vibrating fields combine to create an electromagnetic wave. You can see animations of electromagnetic waves at these URLs:. Q: Electromagnetic waves are generally caused by magnetic fields doing what (or moving in what way)? Choices: - revolving - rippling - folding - vibrating A:
Ans: vibrating
(Q).
Answer the following question given this paragraph: Water is recycled through the water cycle. The water cycle is the movement of water through the oceans, atmosphere, land, and living things. The water cycle is powered by energy from the Sun. Figure below diagrams the water cycle. Q: The water cycle is powered by energy from where? Choices: - atmosphere - earth - living things - sun A:
(A).
sun
Ques:Answer the following question given this paragraph: During the Permian Period, all the major landmasses moved together to form one supercontinent. The supercontinent has been named Pangaea. You can see how it looked in Figure below . At this time, temperatures were extreme and the climate became very dry. As a result, plants and animals evolved ways to cope with dryness. For example, reptiles evolved leathery skin. This helped prevent water loss. Plants evolved waxy leaves for the same purpose. Q: All the major landmasses moved together to form one supercontinent in which period? Choices: - Mesozoic - cambrian - Cenozoic - permian A:

Ans:permian
Answer the following question given this paragraph: Make sure formulas of all reactants and products are correct before balancing the equation. Oxygen gas is a diatomic molecule. Potassium oxide is an ionic compound and so its formula is constructed by the crisscross method. Potassium as an ion becomes K + , while the oxide ion is O 2 . Q: What kind of atomic molecule is oxygen gas? Choices: - aromatic - symbiotic - dramatic - diatomic A:
diatomic