Brainlies ! 1. which of the following indicates that an endothermic reaction has occurred? heat is released water is formed salt is produced temperature decreases 2. scientists have developed a new drug known to cure a previously incurable disease. what best explains if the new drug is a compound or not? it is a compound because it will be able to cure a disease. it is not a compound because it was developed by scientists. it is a compound because compounds make all types of matter. it is not a compound because compounds make up only living things.

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.