Unit 3 Topic 5 - Food Production

Is added to the soil to improve plant growth by replacing the lost nutrients

Are used to kill insects/pests that would eat the crop if left untouched

Are used to kill weeds that would compete with the crop for water, sunlight space, etc.

plants need nitrogen to make protein but plants can’t use atmospheric nitrogen directly so they absorb it through the ground in the form of nitrates. nitrogen is recicled through the nitrogen cycle.

• plant protein • animal protein • ammonia • nitrItes • nitrAtes

the build up of substance in tissues of a living organism often resulting in organ failure/death

Nitrates