If the chemical composition of a rock is changed,
the rock has experienced chemical weathering
the rock has become igneous
the rock did not contain minerals
the rock is deep inside the earth

Which is the correct order in the scientific process? ask a question ® form a hypothesis ® make an observation ask a question ® make an observation ® form a hypothesis make an observation ® form a hypothesis ® ask a question make an observation ® ask a question ® form a hypothesis

Read each description below and determine to which stage of sleep each pertains. then click and drag each box into the appropriate category below.

Which of these statements is true about autotrophs, but not heterotrophs? a. they use sugar and oxygen to make carbon dioxide and water.b. they use chlorophyll and oxygen to make carbon dioxide and water.c. they use sunlight, water, and carbon dioxide to make sugars.d. they use sunlight, water, and oxygen to make chlorophyll.