Echinoderms have a unique water vascular system with tube feet, and another group of echinoderms are the echinoids. Given these facts, which has a unique water vascular system among the following options: - roots - trees - Conifers - Echinoids - fur seals - Most plants - ferns - bushes
Echinoids

(Question)
Gases released during the use of fossil fuels causes global warming, and global warming threatens the entire planet. Given these facts, gases released during the use of fossil fuels threaten what among the following options: - coastlines - the entire planet - solar movement - The atmosphere - Plant growth is reduced - living things - star systems - star formations
(Answer)
the entire planet

Ques: Melting is when solids are heated above their melting point, and ice is a solid, it's cold and it's hard. Given these facts, melting occurs when ice is among the following options: - heating liquids - temperature changes - heat is produced - cooled - heated below melting point - frozen - heated above melting point - It gets heated up
Ans: heated above melting point

(Q).
Absorbing energy causes objects to heat, and every car is in the group vehicles and in the group ground objects . Given these facts, absorbing what causes cars to heat among the following options: - cool - Pollution - sunlight - energy - oxygen - shade - ice - Energy.
(A).
energy

Ques:Avalley is formed by a river flowing, and rivers cause erosion by transporting weathered rock and soil downstream. Given these facts, what are created through erosion among the following options: - kalenchoes - Roads - Valleys - Mountains - Volcanoes - Stalactites - flooding - loose soil

Ans:Valleys

Carpooling decreases the amount of cars used to travel to a place, and carpooling cuts down on congestion and pollution. Given these facts, what decreases when we decrease the amount of cars traveling to one place among the following options: - Temperature - Heart rate - Climate change - Pollution - Clean air - forces - Burning fossil fuels - gene flow
Pollution