Answer:
Coronaviruses are named for the crown-like spikes on their surface. There are four main sub-groupings of coronaviruses, known as alpha, beta, gamma, and delta.
Human coronaviruses were first identified in the mid-1960s. The seven coronaviruses that can infect people are:
Common human coronaviruses
229E (alpha coronavirus)
NL63 (alpha coronavirus)
OC43 (beta coronavirus)
HKU1 (beta coronavirus)
Other human
2)
angle 1= 75
angle 4= 75
angle 5=63
3)
x=14
angle 2=80
angle 5= 80
angle 6 =36
sorry if my work is messygood luck my dear
<span>B. short grasses and mosses
</span>