All living things are made up of carbon this is because A) Carbon likes to make 6 bonds with many other kinds of elements
B) Carbon forms very unstable bonds of all elements except for itself
C) carbon has the ability to form a single bonds, double bonds, triple bonds, and rings and form large macromolecules
D) carbon can only form small chains of macromolecules

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.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

a. an idea which cannot be disproven!

explanation: