True or false A system of two magnets held in place contains potential energy but not kinetic energy

true

Explanation: because the magnets arent moving the are held in place they have the potential to move but not the energy from moving

thymine. in rna, thymine is replace by uracil

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.