Which of the following is true about elements in the Earth system?
A.
The Earth system...
Biology, 10.04.2020 18:40 davechucktaylor
Which of the following is true about elements in the Earth system?
A.
The Earth system essentially contains a fixed amount of chemical elements that cannot cycle through different reservoirs on Earth.
B.
The total amount of chemical elements on Earth is constantly increasing as the Earth system creates elements within its core.
C.
The total amount of chemical elements on Earth is constantly decreasing as plants and animals take in nutrients.
D.
The Earth system essentially contains a fixed amount of chemical elements that cycle continuously throughout the system.
Answers: 1
Biology, 21.06.2019 21:00
What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?
Answers: 3
Biology, 22.06.2019 06:30
Step 1 review the imaginary strand of dna below. note the complementary base pairs. a g c a a t c c g t c t t g g t c g t t a g g c a g a a c c step 2 to begin replicating this strand of dna, draw the two sides of the strand separating. step 3 now, draw the free-floating bases linking up with the separate sides. remember to follow the rules of complementary base pairing. step 4 draw the two resulting dna strands.
Answers: 1
Biology, 22.06.2019 16:00
Which enzyme is responsible for “unzipping" the dna by breaking the hydrogen bonds between the nucleotides?
Answers: 1
Biology, 22.06.2019 16:20
Select the correct answer. which statement applies only to the axial skeleton, not the appendicular skeleton? a. it contains a pivot joint. b. it has muscles attached that work in pairs. c. it contains red bone marrow. d. it possesses fossa for bone articulation. e. it protects the heart and lungs.
Answers: 2
Mathematics, 12.03.2021 05:00
Mathematics, 12.03.2021 05:00
Mathematics, 12.03.2021 05:00
Mathematics, 12.03.2021 05:00
English, 12.03.2021 05:00
History, 12.03.2021 05:00
Mathematics, 12.03.2021 05:00
Health, 12.03.2021 05:00
History, 12.03.2021 05:00
Mathematics, 12.03.2021 05:00
Mathematics, 12.03.2021 05:00
History, 12.03.2021 05:00
Mathematics, 12.03.2021 05:00