Answer:
I'm not sure exactly what your supposed to do but a,b and c are all correct but d is false.
Sildenafil, also known as viagra, treats <span>erectile dysfunction.
</span>Isosorbide dinitrate- is used to treat or prevent angina.
They both dilate blood vessels, making it easier for blood to flow.
This drugs taken together are not recommended because it may cause blood pressure to fall
excessively, which can lead to cardiovascular collapse.
Other side effects are: dizziness, fainting,
headache, heart palpitations, and priapism (prolonged and
painful erection)
Answer:
The answer to your question is...
Explanation:
Robert Hooke and Anton van Leeuwenhoek.
I have always heard them referred to as "pathogenic" but I believe the answer is pathologic