If antigens are molecules that the immune system recognizes as foreign to the physical entity, then what are molecules that the immune system recognizes as foreign to the physical entity? Answer choices: - bacteria - proteins - antibodies - Allergies - negative - immunities - parasites - antigens
antigens

If viruses can only be seen with a microscope, then what can viruses be seen with? Answer choices: - eye - A computer - magnifying glass - microscope - the skin - radiation - Chemical energy - glasses
microscope

Q: If manatees convert chemical energy to mechanical energy, then what do manatees convert into mechanical energy? Answer choices: - major threat to health - chemical energy - direct energy - electrical energy - objects that have mass - fossil fuels - photosynthesis - adding heat
A: chemical energy

Question: If anticyclones cause clear weather, then anticyclones cause what? Answer choices: - global warming - colder weather - Greenhouse gases - clear weather - Dehydration - erosion - flooding - contamination
Answer: clear weather

*Question*
If san Francisco has tectonic plates, then what has tectonic plates? Answer choices: - San Francisco - outer space - atmosphere - h2o - coral reefs - humans disturb it - Physical weathering - threatened
**Answer**
San Francisco

(Q).
If if a fern fossil is found then that places was previously covered in water, then fossils are found in places that were previously covered in what? Answer choices: - matter - earth - soils - dirt - water - wetland - rocks - erosion
(A).
water