What is the most common method for phosphates to move from rocks into the aquatic ecosystem?
a. Geological uplifting
b. Being consumed by organisms
c. Breakdown by bacteria
d. Leaching
e. Decomposition
d
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Which hormones enter cells and alter mRNA production?
a. steroid and peptide hormones b. steroid and phospholipid hormones c. thyroid and peptide hormones d. peptide and phospholipid hormones e. steroid and thyroid hormones
What could a mutation in a gene that controls cell growth and division lead to?
1.denaturation of proteins 2.cancer 3.errors in transcription 4.problems with DNA replication
Which cell type is targeted by the human immunodeficiency virus (HIV)?
What will be an ideal response?
Surplus individuals in the ____ disperse and find another habitat in which to settle and reproduce
a. metahabitats b. sink habitats c. landscape d. source habitats e. K-selected habitats