True or false The presence of predators usually decreases the number of different species that can live in an ecosystem.

Synovial fluid serves as a lubricant to prevent friction between two parts that move on each other such as in the case of and bones.

Can someone me. so last night i was with my girl and i ended up with a peanut butter jar in my anus. sadly we have tried to pull it out but its well stuck in there : ( any ideas how to get it out?

We can be sure that a mole of table sugar and a mole of vitamin c are equal in their