What is the purpose of the GROUP BY clause in SQL?

A common reason for lack of food motivation is:  

Over the past few decades, the pollinator populations have been declining. Consumers are realizing that without the bees, it would be nearly impossible to afford to grow some foods. Pollinators fit into which category of ecosystem services?

Which T cells express CD8 on their surface?

What is thalassemia?

Which of the following is true about inheritance of Down syndrome?

Which data type would you use for storing text in a relational database?

The Cas9 protein acts as a(n):

What role does the CFTR protein play in normal cells?

What are the three main steps of a PCR cycle?