Which of the following best explains the factors that led to the dust bowl? a. humans had been farming the land for too long without droughts. b. temperatures suddenly increased and brought on drought conditions. c. poor farming techniques that killed the soil were combined with drought. d. humans employed bad soil management practices that were unsustainable. answer is c. poor farming techniques that killed the soil were combined with drought.

The answer is c) Poor farming techniques that killed the soil were combined with drought

Explanation:

This phenomenon appeared in the year of 1930, the plains of the interior of the United States were hit by dust storms that transformed agricultural lands into practically sand deserts. Although it is thought that this was caused by a natural disaster, due to drought and high winds, the reality was very different and that tragedy was caused by man. This phenomenon was presented by drought conditions added to the years of poor soil management practices, which left it at the mercy of the wind.

the answer for apex is "1 and 6"

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.