How would the pituitary gland respond when the production of progesterone stops​

How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey

Talking listening and reacting non verbally are all part of communicating

Which statements describe resources? one of the factors people use when deciding where they will live is the availability of resources. renewable resources have little value for people. resources are unevenly distributed throughout the world. energy is the world resource which has the highest use. the use of nonrenewable resources has decreased in recent history. the use of resources is evenly distributed throughout the world. the world's oil supply will last for the next forty years if its use continues as expected.