All of the trees in an ecosystem are examples of the in an ecosystem. Mammals

Biotic Factors

Heterotrophs

Abiotic factors

All of the trees in an ecosystem are examples of the biotic fators in an ecosystem.

Mammals - definitely not. Mammals are who have skin and backbones.

Biotic Factors - which are living organisms within a ecosystem.

Heterotroph -  who cannot make their own food. plant can make their own food.

Abiotic factors - which are not living, plants are living organisms.

Biotic Factors

Step-by-step explanation:

These functions relate to the movement of energy through an ecosystem, and trees — along with other photosynthetic plants — are the chief primary producers. This means that trees convert the sun's energy into food energy, which is then used by other members of the ecosystem

-14

step-by-step explanation:

2x2 – 2(x+4)

=2x2-2（5+4）

=4-2×9

=4-18

=-14

1/4 because there is 4 grades.