Which segmented worm may be used in medicine to prevent or break down blood clots? (A) earthworm
(B) leech
(C) marine worm
(D) tapeworm

Which of the following is an effect of the uneven heating of the earth by the sun? a sea breeze a land breeze a convection current all of the above

Draw a simple labelled diagram if a collenchyma tissue

Some scientists argue that global warming is related to buming fossil fuels to produce energy o increased use of fertilizers loss of forested areas a of the above