Answer the following question given this paragraph: Figure 27.13 Animals that molt their exoskeletons, such as these (a) Madagascar hissing cockroaches, are in the clade Ecdysozoa. (b) Phoronids are in the clade Lophotrochozoa. The tentacles are part of a feeding structure called a lophophore. (credit a: modification of work by Whitney Cranshaw, Colorado State University, Bugwood. org; credit b: modification of work by NOAA). Q: Animals that molt their exoskeletons belong to which clade? Choices: - protists - spirogyra - trichina - ecdysozoa A:
ecdysozoa

Answer the following question given this paragraph: Hydrogen has the smallest, lightest atoms of all elements. Pure hydrogen is a colorless, odorless, tasteless gas that is nontoxic but highly flammable. Hydrogen gas exists mainly as diatomic ("two-atom") molecules (H 2 ), as shown in the diagram on the right. Hydrogen is the most abundant element in the universe and the third most abundant element on Earth, occurring mainly in compounds such as water. Q: What has the smallest, lightest atoms of all the elements and is colorless, odorless, tasteless and nontoxic, but highly flammable in its pure state? Choices: - helium - magnesium - barium - hydrogen A:
hydrogen

Answer the following question given this paragraph: Particulates cause lung diseases. They can also increase the risk of heart disease and the number of asthma attacks. Particulates block sunlight from reaching Earth's surface. This means there is less energy for photosynthesis. Less photosynthesis means that plants and phytoplankton produce less food. This affects whole ecosystems. Q: Particulates cause lung diseases. they can also increase the risk of heart disease and the number of what? Choices: - coughing - cancer - shortness of breath - asthma attacks A:
asthma attacks