In the 20th century

a. carbon dioxide emissions have begun to decline due to restrictions in the kyoto protocol

b. the earth has warmed 10 times faster than it did coming out of the last ice age

c. temperatures in the top 1,000 feet of the ocean decreased by about a half degree (fahrenheit)

d. temperatures have been higher than any time in the last 800,000 years

b. The earth has warmed 10 times faster than it did coming out of the last Ice Age

Explanation: global warming from environmental degredation.

answer; i believe the correct answer is (data); /// good luck

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.