Which statement best describes the leaf structures of monocots and dicots? Dicots have narrow leaves with parallel veins, and monocots have broad leaves with a network of veins. Monocots have narrow leaves with parallel veins, and dicots have broad leaves with a network of veins. Dicots have narrow leaves with a network of veins, and monocots have broad leaves with parallel veins. Monocots have narrow leaves with a network of veins, and dicots have broad leaves with parallel veins.

What evidence could be used to convince policy makers to change a shipping lane from going through a whale breeding ground? information on the number of all whale species currently alive information on the number of all whales hit by boats in the given area information on the number of whale deaths in the world's oceans information on the number of whale offspring born every year. (a) scientists could collect and combine data on fish populations all around the world to show that their populations are declining. (b) scientists collect and combine data on fish populations all around the world to show that their populations are increasing. (c) scientists work together and use past data to show that fish populations are becoming locally extinct in some areas. (d) scientists work together and use past data to show that some fish populations are adapting to environmental changes.

Based on the diagram, which of the following best describes ways in which the physical appearance of h. neandertalensis and h. sapiens differ?

How does a catalyst influence a chemical reaction?