PLEASE HELP’ Which country was the first to send a person into space?
A. Great Britain
B. The United States
C. Germany
D. The Soviet Union

D. The Soviet Union

Explanation:

On that day in 1961, Russian cosmonaut Yuri Gagarin became the first human in space, making a 108-minute orbital flight in his Vostok 1 spacecraft.

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.