ASTRONOMY: Complete this paragraph regarding dangers from the sun. X-rays and uv rays from the sun can disrupt (BLANK 1) radio communication from ground-based radio towers. (BLANK 2) may also be affected by solar particles that can damage equipment. Humans in (BLANK 3) are also susceptible to radiation damage from the Sun. Solar activity can also cause (BLANK 4) that can damage electrical transformers and power stations.
BLANK 1
-ultra high frequency
-high feequency
-low frequency
BLANK 2
-aircraft
-sea vessels
-satellites
BLANK 3
-spacecraft
-airplanes
-high mountains
BLANK 4
-thermal heating
-geomagnetic storms
-electrical storms
Please help me