Which sentences describe the cyclone device?
A cyclone device accumulates fine particulates from the air by making a dirty air stream flow in a spiral path inside a cylindrical chamber. It
consists of several long and narrow fabric filter bags suspended upside-down in a large enclosure. When dirty air enters the chamber, the
larger particulates strike the chamber wall and fall into a conical dust hopper at the bottom. Fans blow dirt-filled air upward from the bottom of
the enclosure, trapping dirt particles inside the filter bags and releasing clean air from the top. The top of the chamber has an outlet that lets
out cleaned air

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.

regents of the university of california v. bakke, 438 u.s. 265 (1978), was a landmark decision by the supreme court of the united states. it upheld affirmative action, allowing race to be one of several factors in college admission policy.

i believe it's c. the trait for large beaks will be passed on to future generations through natural selection.

since eventually smaller beaks would have to find another source of food or even eventually just die out from the lack of food.