Answer:
C The water had adequate nitrogen and phosphorus, so it is likely iron limited.
Explanation:
Phytoplankton are single- cell organisms that live in oceans.
They require nitrogen, phosphorus and trace amount of iron to survive.
From the scientist's results after testing the water for nitrogen and phosphorus,there are reasonable amount of these elements.
Therefore insufficient iron in the water is the reason why he could find plenty phytoplankton in the ocean.
Answer:
Empirical formula is Li₂CO₃.
Explanation:
Percentage of oxygen= 65.0%
Percentage of lithium = 18.7%
Percentage of carbon= 16.3%
Empirical formula = ?
Solution:
Number of gram atoms of C = 16.3/12 = 1.4
Number of gram atoms of Li = 18.7/6.94 = 2.7
Number of gram atoms of O = 65.0/ 16 = 4.1
Atomic ratio:
Li : C : O
2.7/1.4 : 1.4/1.4 : 4.1/1.4
2 : 1 : 3
Li : C : O = 2 : 1 : 3
Empirical formula is Li₂CO₃.
Soda provides nutritional value that helps plants grow.
Explanation:
I just did this question and that’s what was right.
D. toxic chemical used to control pest population.
<span>Sanitizing is essential in addition to
cleaning poultry equipment. This is done only at the beginning and ending of
your shift while cleaning should be done from time to time. Prior to
sanitization, all surfaces must be clean and thoroughly rinsed to remove any
detergent residue. Keep in mind that unclean surface cannot be sanitized. Sanitize
refers to reduction of unwanted microorganisms to levels considered safe from a
public health.</span>
