Which of the following is a common source of groundwater pollution? oil dumping and oil spills dumping paper and plastics into a river landfills containing chemicals that drain into the soil storm-drainage pipes carrying water with high levels of sediment

Which of the following best describes the expensive tissue hypothesis? brains require more energy, so the gut had to be reduced, and larger brains and tool use led to higher quality diets. increasing body size means that homo neanderthalensis had to include more fat in its diet. brains require more energy, so the gut had to be reduced as brains got bigger. brains require more fat, so the gastrointestinal viscera (gut) had to expand, and hands were needed to acquire more food.

Explain the significance of meiosis in sexual reproduction

Packet fragmentation is not normal, and can only occur if an attack has been initiated. true false