You are presented with the question "When does steel expand?" and the following answer choices: - matter vibrating - when it loses heat - It gets heated up - flow of electrons - when it transfers heat away - recovery time from fatigue - when it conducts heat - when it cools down Now knowing that when metal conducts heat , that metal expands and steel is a solution of metals, choose the best answer.
when it conducts heat
(Question)
You are presented with the question "Which animal has a circulatory system with a three-chambered heart?" and the following answer choices: - animals - Salamander - fur seals - mammals - alpacas - a fish - warm-blooded - barnacles 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.
(Answer)
Salamander
Ques: You are presented with the question "What can be used to measure mass?" and the following answer choices: - forces - fats - rockets - cup - Lift - beaker - volume - scale Now knowing that abalance is used for measuring mass of an object and balancing connotes a set of scales, choose the best answer.
Ans: scale
(Q).
You are presented with the question "what does digestion involve?" and the following answer choices: - ovaries - saliva - Energy. - chemicals - heat - cooking - cooking food - matter Now knowing that digestion is the process of breaking down food into components the body can absorb and saliva starts to break down the food, choose the best answer.
(A).
saliva
Ques:You are presented with the question "what are commonly found in soil and water?" and the following answer choices: - bacteria - chlorofluorocarbons - dormant bacteria - gravity - weathering - hydrocarbons - Organic compounds - density Now knowing that endospores are commonly found in soil and water and some bacteria have specialized dormancy structure, the endospore , choose the best answer.

Ans:dormant bacteria
Ques:You are presented with the question "Erosion causes the Nile to become:" and the following answer choices: - Sediment - shallower - less wide - deeper and wider - homogenous - colder and wetter - faster - Physical weathering Now knowing that erosion causes a river to become deeper and wider and water and the Nile River are important to Egypt, choose the best answer.

Ans:
deeper and wider