Electromagnetic fields and therefore waves are generated orthogonal to the electric current that generated it.
D. a viral disease because it is known and unknown and spreads.
Answer:
D
Explanation:
When a substance moves from low to high concentration it is moving against its concentration gradient, which requires more energy.
A. It depends on where it is moving, not the substance
OB. This is describing diffusion
OC. Does not require energy, it is passive transport through a semi-permeable membrane
The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.
SO CELLS, ORGANS, SYSTEM AND ORGANISMS I GUESS?