Synapse is the correct answer :)
There could be a lot of reasons. To help break down food for the plants, kill off bad and harmful things that might damage the plant.
Answer: A
Explanation: the change in seasons is caused by Earths axis tilt and revolution and position near the sun
Answer:
From the deepest ocean trench to the tallest mountain, plate tectonics explains the features and movement of Earth's surface in the present and the past. Plate tectonics is the theory that Earth's outer shell is divided into several plates that glide over the mantle, the rocky inner layer above the core.
Explanation:
hope this help
pick me as the brainliest
It means an organism respire without it
so that organism know as anaerobic
for example : bacteria eats human and animal dead bodies under the earth there O² is deficient so bacteria respire with oxygen O²