1. Which weather instrument is used to measure air temperatures recorded on a weather
map?
(1) anemometer
(3) thermometer
(2) wind vane
(4) barometer

The correct answer is (3) thermometer

Explanation:

A THERMOMETER quantifies the air temperature. more importantly, thermometers are closed glass tubes containing fluids equivalent to alcohol or mercury. When air across the tube heats the liquid, the liquid expands and strikes up the tube. A scale then exhibits what the true temperature is.

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.