If sand is formed by mechanical weathering, then what is formed by mechanical weathering?  Answer choices: - planets  - coral  - calcium  - ore  - sand  - soils  - tube  - peat
sand

(Question)
If acavern is formed by carbon dioxide is in groundwater seeping through rock and dissolving limestone, then what forms caverns by seeping through rock and dissolving limestone?  Answer choices: - pure oxygen  - Something with a head, thorax, and abdomen  - basic building blocks of life  - carbon dioxide in groundwater  - magma in groundwater  - oxygen in groundwater  - At the peak of a mountain  - underground systems
(Answer)
carbon dioxide in groundwater

Ques: If amphibians with four limbs are more advanced than fish, then amphibians with what are more advanced than fish?  Answer choices: - four eyes  - sensory neurons  - rapid expansion  - layers of fat  - four limbs  - kinetic energy  - tails  - many limbs
Ans: four limbs

(Q).
If smoke can cause cancer by producing mutations in DNA, then what can cause cancer by producing mutations in DNA?  Answer choices: - maples  - PDAs  - A drug.  - copper  - coal  - CO 2  - smoke  - sponges
(A).
smoke

Ques:If the environmental changes affect the life history of a species, then what can environmental change affect?  Answer choices: - DNA damage and mutations  - the life history of a species  - Animal survival  - organisms and their habitat  - rivers and streams  - global ecosystems  - that material's properties  - other living things

Ans:the life history of a species

Ques:If mitosisis how organisms grow and repair themselves, then how do organisms grow and repair themselves?  Answer choices: - complex  - gametes  - recycling  - mechanical  - Microscope  - mitosis  - meiosis  - atoms

Ans:
mitosis