50% because the Hh is dominant meaning the father probably will pass it along to his children if the wife is also Hh.
Coronary artery disease is when plaque in arteries causes blood to not flow correctly or as smoothly as possible. Therefore, a heart attack can occur if blood can't flow.
C: rainforest are biologically more diverse than ecosystems.
Explanation: the reason why this is correct is because of the vast ratio of American and Europeans animal/plant species compared to Brazil alone. They have much more diversity hence having more biodiversity. The vast amount of plants and animals are superior to other countries.
CYOKININS is the correct option. Cytokinins is one of the types of plant hormones and it is usually produced in the root apical meristem, that is, at the very tip of the root. The hormone delays aging in plants and it also involve in repair of wounded plant parts.