Answer the following question given this paragraph: The nitrogen cycle moves nitrogen back and forth between the atmosphere and organisms. Bacteria change nitrogen gas from the atmosphere to nitrogen compounds that plants can absorb. Other bacteria change nitrogen compounds back to nitrogen gas, which re-enters the atmosphere. Q: The nitrogen cycle moves nitrogen back and forth between the atmosphere and what? Choices: - Ocean - Ozone Layer - sediments - organisms A:
organisms
(Question)
Answer the following question given this paragraph: Different pathogens spread in different ways. Some pathogens spread through food. They cause food borne illnesses, which are discussed in a previous concept. Some pathogens spread through water. Giardia lamblia is one example. Water can be boiled to kill Giardia and most other pathogens. Q: Water can be boiled to kill giardia and most other what? Choices: - parasites - bacteria - germs - pathogens A:
(Answer)
pathogens
Ques: Answer the following question given this paragraph: Figure 8.4 Photosynthesis uses solar energy, carbon dioxide, and water to produce energy-storing carbohydrates. Oxygen is generated as a waste product of photosynthesis. Q: Photosynthesis uses solar energy, carbon dioxide, and water to produce energy-storing carbohydrates.what is produced as a waste product? Choices: - methane - calcium - sulfur - oxygen A:
Ans: oxygen
(Q).
Answer the following question given this paragraph: If you drive or take the bus to school or work, you are using a vehicle that probably burns gasoline, a material that burns fairly easily and provides energy to power the vehicle. Recall that burning is a chemical change. Q: If you drive or take the bus to school or work, you are using a vehicle that probably burns gasoline, a material that burns fairly easily and provides energy to power the vehicle. recall that burning is a? Choices: - physical change - temperature change - energy change - chemical change A:
(A).
chemical change
Ques:Answer the following question given this paragraph: Phylum Nemertea The Nemertea are colloquially known as ribbon worms. Most species of phylum Nemertea are marine, predominantly benthic or bottom dwellers, with an estimated 900 species known. However, nemertini have been recorded in freshwater and terrestrial habitats as well. Most nemerteans are carnivores, feeding on worms, clams, and crustaceans. Some species are scavengers, and some nemertini species, like Malacobdella grossa, have also evolved commensalistic relationships with some mollusks. Some species have devastated commercial fishing of clams and crabs. Nemerteans have almost no predators and two species are sold as fish bait. Morphology Ribbon worms vary in size from 1 cm to several meters. They show bilateral symmetry and remarkable contractile properties. Because of their contractility, they can change their morphological presentation in response to environmental cues. Animals in phylum Nemertea show a flattened morphology, that is, they are flat from front to back, like a flattened tube. Nemertea are soft and unsegmented animals (Figure 28.18). Q: The colloquial term "ribbon worm" refers to the mostly marine species of what phylum? Choices: - nematoida - lophophorata - gnathifera - nemertea A:

Ans:nemertea
Answer the following question given this paragraph: Bones are far from static, or unchanging. Instead, they are dynamic, living tissues that are constantly being reshaped. Under the direction of osteocytes, osteoblasts continuously build up bone, while osteoclasts continuously break it down. You can watch an animated video of these processes in bone at http://www. youtube. com/watch?v=yENNqRJ2mu0 . Q: Bones are far from static, or unchanging. instead, they are what? Choices: - continuous - stable - fluid - dynamic A:
dynamic