Electromagnetic EM waves can only travel through solids and gasses true or fales

it's false , they can travel through vacuum too.

Explanation:

electromagnetic EM waves can travel through solids, liquid , gases, vacuum.

these waves can travel through any medium, for example visible light.

hence doesn't need any material media to propagate

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.

the water is warmed up by the sun and then it evaporates into the atmosphere. the sunlight warms the water by its heat. water is then cooled down and condensation takes place. the water then finally returns back to the earth by the process of precipitation in the form of rain or ice.

explanation: