Can somebody me with these two answers ?

describe what happened at the end of the mesozoic era. what happened to plants and animals because of this event? make sure to include the steps leading up to this.

explain what adaptations and environmental conditions made mammals better suited for survival in the cenozoic era.

Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.