A woman bought 10 crates of eggs from the market. On getting home, she realized that 15 eggs were broken. What is the ratio of broken eggs to unbroken eggs. ​

B:U = 1:20

Explanation:

Let the number of broken eggs be B.

Let the number of unbroken eggs be U.

Given the following data;

Number of crates of egg = 10 crates

But, 1 crate of egg = 30 eggs

10 crates of egg = 30 * 10 = 300 eggs

B = 15 eggs

U = 300 eggs

Ratio B to U = B:U

B:U = 15:300

Dividing by 15, we have;

B:U = 1:20

the element that provides strength to the exoskeletons of clams and oysters is phosphorus. this is so because calcium carbonate is the main component in the shells.

explanation:

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.