Satellites moving at a high speed stay in orbit because. gravity cannot act on objects traveling above a certain speed

their inertia continuously steers them around Earth

Earth’s surface curves away as gravity pulls them toward Earth

the force of gravity keeps satellites moving at a constant velocity

An autotrophic protist - they can perform photosynthesis and mainly consist of unicellular algae. they can be divided into number of systematic group according to the shape of their cell and the type of photosynthetic pigments they use.

The answer is going to be a because ik that i’m right

Mitochondria produce atp, a high energy compound. atp is used for all sorts of enzyme-mediated reactions, such as making proteins/nucleotides/etc, certain compounds cross the cell membrane, muscles move, etc.  without this source of energy, a cell will die. it will not be able to repair itself, defend against pathogens, etc.