1. on a separate piece of paper page, design a table to record the data you would collect from the case study
below. include room for individual results and averages from the three set ups. staple or paste it into your
workbook once you have finished. you can use the table above as a guide to you.
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case study:
carbon dioxide levels in a respiration chamber
a datalogger was used to monitor the
concentrations of carbon dioxide (co2) in
respiration chambers containing five green
leaves from one plant species. the entire
study was performed in conditions of full light
and involved three identical set-ups. the co,
concentrations were measured every minute,
over a period of ten minutes, using a co2
sensor. a mean co, concentration (for the three
set-ups) was calculated. the study was carried
out two more times, two days apart.
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wat inte

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.

ans.

in united states (us), the first leading cause of death for both women and men is heart diseases that leads to more than half of the deaths. heart diseases develop due to narrow arteries, buildup of plaque in blood capillaries that arises difficulties in blood flow.

the second leading cause of deaths in us is cancer that affects individuals of all ages. it develops due to uncontrolled growth and spread of tumor cells, which results in death if the not controlled or treated.

the third leading cause of deaths in us is copd or chronic obstructive pulmonary disease. it includes difficulty in breathing, chest infections, and persistent cough. smocking is a leading cause of copd and around 80% of copd deaths occur due to smoking.

thus, the correct answer is 'option). cancer, copd, and heart disease.'