Why is high blood pressure known as "the silent killer"?
a. it generally shows no symptoms.
b. it kills people while they sleep.
c. it generally increases the risk of heart attacks.
d. it kills by cutting off the airways.

Which part of speech can an adjective modify

1. in which sentence is the underlined portion a predicate nominative? for astronauts, going into space to repair orbiting equipment becomes a challenge. for astronauts, going into space to repair orbiting equipment becomes tricky. for astronauts, going into space to repair orbiting equipment becomes challenging. for astronauts, going into space to repair orbiting equipment becomes frequent.

Based on the map, which city will marco polo describe after kalhat if he continues northwest across the arabian sea? hormuz dhofar socotra venice