There would be a lot of herbivores. Also their would be a lack of vegetation eventually in their area because the secondary consumers will not eat most of the primary consumers like deer and squirrels which in turn will eat all of the vegetation. This would conclude that the herbivores would eventually die do to starvation, that is why the meat eaters are needed in a ecosystem.
Hope this helps just took this quiz today and got a 4/4 on my answer so hopefully this will help you guys.
If there weren't secondary consumers, then the primary consumers population would increase. Also, plant life would be threatened, which would cause increased difficulty for primary consumers to survive after they overpopulate.So the population increases in producer (and probably producer diversity) and decreases in secondary, tertiary and higher order consumer populations.
A leaf is made up of many layers and is surrounded by two. Upper epidermis, mesophyll, bundle sheath, vein, mesophyll, lower epidermis, and guard cells.