If the color of leaves on oaks usually changes in the autumn season, then what usually changes in the autumn season? Answer choices: - Something that can be auburn - looseness of dirt or compost - the looseness of soil - the color of leaves on oaks - a hemisphere is tilted away from the sun - Warm air moving into cold air - the male sex cells of plants - The bending of a ray of light
the color of leaves on oaks

(Question)
If oxygen has a positive impact on an ecosystem, then what has a positive impact on an ecosystem? Answer choices: - mussels - hurricanes - invasive species - Frogs - stay warm - animals - wildfires - oxygen
(Answer)
oxygen

Ques: If gases released during the use of fossil fuels causes climatic oscillation and bad weather, then what is released during the use of fossil fuels that causes climatic oscillation and bad weather? Answer choices: - coal - solutes - gases - acidity - storms - heat - air - weather
Ans: gases

(Q).
If echinoderms use scent to communicate, then what do echinoderms use to communicate? Answer choices: - vision - words - sound - Light - waves - Acids - language - scent
(A).
scent

Ques:If sand formations are formed by wind, then what makes sand formations? Answer choices: - potash - wind - fibers - fish - Rain - sea - soils - coral

Ans:wind

If echidnas reproduce by laying eggs, then echidnas reproduce how? Answer choices: - asexually - by indirect light - spread flower seeds - during the day - by birthing live young - by laying eggs - by budding - with their fur
by laying eggs