Limestone deposits are often evidence of ancient tropical seas.
true or false

The correct answer is True

Explanation:

Limestone is a type of rocky material that is mainly formed of fragments of ancient marine organism especially organisms such as coral or mollusks in tropical seas as these organisms are made from calcium carbonate that dissolves over time and forms piles of limestone process that takes many years. Because of this, it is true limestone deposits are often evidence of ancient tropical seas because limestone is formed as the result of organisms that live mainly in tropical seas, rather than in other types of seas, and also this process takes many years which means seas that are now limestone are mainly ancient or existed just miles of years ago.

economic impact of malaria is estimated to cost africa $12 billion every year. this figure factors in costs of health care, absenteeism, days lost in education, decreased productivity due to brain damage from cerebral malaria, and loss of investment and tourism.

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.