Macroevolution occurs over geologic time above the level of the species, and geologic time lines are expressed in geologic eras and periods. Given these facts, macroevolution occurs over what, above the level of the species among the following options: - atmosphere - years - growth - outer space - stress - Joules - humans - eras
eras

Active immunity results when an immune response to a pathogen produces memory cells, and pathogens are simply a variety of diseases which kill insects. Given these facts, what prevents insects from being killed among the following options: - Fly swatter - Active immunity - Exfoliation - a cuticle - food - bugs - rays or beams - resistance
Active immunity

Q: Dew is formed when water vapor condenses over night, and fog happens when the water vapor condenses into particles as air temperatures cool. Given these facts, what is formed when fog condenses over night among the following options: - snow - smog - dew - gas - sleet - fireworks - rain - lake
A: dew

Question: Aplanet rotating causes cycles of day and night on that planet, and of all the planets, Mars is most like Earth. Given these facts, what rotates causing cycles of day and night among the following options: - bushes - Mars - wind - Winter - corn - Sun - motors - rings
Answer: Mars

*Question*
Endocrine hormones travel throughout the body in the blood, and for the tourists, there are many places to travel. Given these facts, endocrine hormones move from place to place through the among the following options: - animals - ovaries - Man - humans - blood - hair - skin - scales
**Answer**
blood

(Q).
Echinoderms lack a centralized nervous system, and echinoderms are represented by the starfish. Given these facts, what lacks a centralized nervous system among the following options: - starfish - barnacles - blowfish - our planet - humans - Pesticides - insects - sharks
(A).
starfish