Hybridization and genetic modification are two methods to improve the annual yield of crops, get better seed and fruits, and produce disease-resistant crops. what is a reason for choosing hybridization over genetic modification?

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring

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.

Which of the following cell structures is significantly different between gram- positive and gram-negative bacteria?