Down
bed
1. type of rock made of 0.13 cm sediment
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3. when oxygen combines with elements
6. the physical and chemical breakdown of rocks
8. substance the dissolves way calcite
10. the grinding away of rock with other rock
13. type of weathering by a change in the mineral composition
14. bits and pieces of broken rock
16. mixture of weathered rock and organic matter
17. a hard, common, rock forming mineral
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your answer should be c) enjoy!

b because they naturally adapt to their environment plz mark brainliest

explanation:

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation:

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.