1. What is one characteristic that all living things and only living things have in common? 2.How did both the Redi and Pasteur experiments prove there was no such thing as a spontaneous generation?
3.Why do living things need water, food, and space to live?
4.The paws of the arctic fox are covered in thick fur. How does this help the fox maintain homeostasis?

it is very expensive

explanation:

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.

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.