Which of these changes in a pond environment is observable 1. the algae content increases in the summer.

2. the water level is lower
when there is little rain.

3. the water temperature at the surface increases when the sun is out.

4. all of these are observable.

ignore what subject i put this in pls i’m just rushing rn

The line plot below represents the number of letters written to overseas pen pals by the students at the waverly middle school.each x represents 10 students. how many students wrote more than 6 and fewer than 20 letters. a.250 b.240 c.230 d.220

Myra took a picture of the sky one afternoon when two jet airplanes appeared to draw a pair of parallel lines with their vapor trails. the vapor trails from two other jets flying from another direction crossed over the parallel trails. she printed her picture and labeled the angles and lines. assume lines c and d are parallel and 2 measures 98°. which statements are true? check all that apply. 3 = 6 = 98° 3 = 14 = 98° 4 = 8 = 82° 4 = 12 = 82° 5 = 8 = 82°

Solve the proportion of 16/50=x/156.25