Growing trees need three essentials – radiant energy from the sun, CO2 and rain from the atmosphere, and nutrients and minerals from the soil. Climate alarmists correctly claim that burning forest products in thermal power stations is “net-zero emissions” because burning the wood just puts the same CO2 back into the atmosphere.

Identical reasoning applies to grazing cattle.

Grasses have the same needs as growing trees: sunlight, CO2, water, and soil nutrients.