You are presented with the question "What sort of circulatory system do frogs, toads, and salamanders share?" and the following answer choices: - live birth - It helps them survive - matter vibrating - two-chambered heart - Veins and arteries. - biological diversity - three-chambered heart - four-chambered heart Now knowing that amphibians have a relatively complex circulatory system with a three-chambered heart and frogs, toads and salamanders are amphibians, choose the best answer.
three-chambered heart
(Question)
You are presented with the question "What does the Euphrates form?" and the following answer choices: - erosion - a solute - a hurricane - Bodily water - a valley - Sediment - ancient ruins - a mountain Now knowing that avalley is formed by a river flowing and and the fourth river is the Great River, the river Euphrates, choose the best answer.
(Answer)
a valley
Ques: You are presented with the question "Springs can be fed by what?" and the following answer choices: - mechanical waves - vernal equinox - precipitation - rainfall - digestive track - water vapor - aqueous solution - carnivores Now knowing that some precipitation that falls on land may soak into the ground, becoming groundwater and wells are drilled into groundwater and springs are fed by groundwater, choose the best answer.
Ans: precipitation
(Q).
You are presented with the question "What can reduce respiratory system capacity?" and the following answer choices: - Breathing - Smoking - influenza - bacteria - Pollution - Exercising - Pesticides - Singing Now knowing that smoking causes direct damage to the lungs and when lung damage is experienced, frequently the total capacity of the respiratory system is reduced, choose the best answer.
(A).
Smoking
Ques:You are presented with the question "Living beings in marine biomes must be adapted to what in the water?" and the following answer choices: - CO 2 - stress - liquid - salt - heat - an ion - energy - motion Now knowing that organisms that live in marine biomes must be adapted to the salt in the water and organisms or living beings are literally things that are alive, choose the best answer.

Ans:salt
Ques: You are presented with the question "What converts electrical energy into what we hear?" and the following answer choices: - a doorbell - sensory neurons - a solar panel - a battery - Firecrackers - waves - a water pump - engines Now knowing that adoorbell converts electrical energy into sound and hearing is the act of perceiving sound, choose the best answer.
Ans:
a doorbell