In kenya, an important cash crop is certain flowers that are used to produce pyrethrum, which is a

The natural insecticide. Have insect repellent effects.

Explanation:

Pyrethrum is composed of several old plants that are classified as the Chrysanthemum or the Tanacetum and are cultivated as the ornamental snowy flower heads and also is made from the natural insecticides that are made of the dried flower central parts and is a member of the daisy family. These plants have a blue-green leaves and grow up to 100 cm. Thus are used to make sprays.

1. d: oceanic crust is thicker and contains a lot of granite2.d: where two continental plates are colliding  3.b.contour boundaries4.b.plates that are attracted to each other by gravity5.a.as two continental plates collide along a convergent boundary, mountains are formed.