If a short haired SS guinea pig is crossed with a long haired ss guinea pig what percentage of their offspring will have short hair?

Choose the molecule that is described by each phrase. energy used during long activities:

Ineed a chemical reaction takes place in which erlergy is released. arrange the reaction's characteristics in order from start to finis lower energy of reactants higher energy of products higher energy of reactants transition state sd lower energy of products

What is thought to have caused the mass extinction at the end of the cretaceous period?