Answer the following question given this paragraph: Freshwater marshes and swamps are characterized by slow and steady water flow. Bogs develop in depressions where water flow is low or nonexistent. Bogs usually occur in areas where there is a clay bottom with poor percolation. Percolation is the movement of water through the pores in the soil or rocks. The water found in a bog is stagnant and oxygen depleted because the oxygen that is used during the decomposition of organic matter is not replaced. As the oxygen in the water is depleted, decomposition slows. This leads to organic acids and other acids building up and lowering the pH of the water. At a lower pH, nitrogen becomes unavailable to plants. This creates a challenge for plants because nitrogen is an important limiting resource. Some types of bog plants (such as sundews, pitcher plants, and Venus flytraps) capture insects and extract the nitrogen from their bodies. Bogs have low net primary productivity because the water found in bogs has low levels of nitrogen and oxygen. Q: What develops in depressions where water flow is low or nonexistent? Choices: - swamps - ponds - sinkholes - bogs A:
bogs
Answer the following question given this paragraph: Cooling and forming crystals. Deep within the Earth, temperatures can get hot enough to melt rock. This molten material is called magma. As it cools, crystals grow, forming an igneous rock. The crystals will grow larger if the magma cools slowly, as it does if it remains deep within the Earth. If the magma cools quickly, the crystals will be very small. Q: What is the molten material deep within the earth? Choices: - volcanic mass - crystals - lava - magma A:
magma
Q: Answer the following question given this paragraph: 8.2 Chromatin Chromosomes consist of chromatin11 . This is made up of strings of DNA, which typically measure centimeters in length if stretched out. This DNA is wound around a histone12 core and organized into nucleosome13 s. The chromatin14 must be uncoiled for gene expression15 and replication16 . Chromosome micrograph. Q: Chromosomes consist of what material made up of strings of dna? Choices: - mitochondria - gray matter - rna - chromatin A:
A: chromatin
Question: Answer the following question given this paragraph: According to the cell theory, all organisms are made up of one or more cells. Cells are the sites where all life processes take place. Cells come only from pre-existing cells. New cells forms when existing cells divide. Q: What theory states that all organisms are made up of one or more cells? Choices: - the molecular anatomy theory - the atomic theory - the micro theory - the cell theory A:
Answer: the cell theory
*Question*
Answer the following question given this paragraph: Ionic and covalent compounds are held together by electrostatic attractions between oppositely charged particles. Describe the differences in the nature of the attractions in ionic and covalent compounds. Which class of compounds contains pairs of electrons shared between bonded atoms?. Q: What holds ionic and covalent compounds together? Choices: - gravity - water - magnetic force - electrostatic attractions A:
**Answer**
electrostatic attractions
(Q).
Answer the following question given this paragraph: The disaccharides differ from one another in their monosaccharide constituents and in the specific type of glycosidic linkage connecting them. There are three common disaccharides: maltose, lactose, and sucrose. All three are white crystalline solids at room temperature and are soluble in water. We'll consider each sugar in more detail. Q: Maltose, lactose, and sucrose are common types of what, which are distinguished by their monosaccharide constituents? Choices: - silicates - oxides - precipitates - disaccharides A:
(A).
disaccharides