Answer:
i believe it is the middle one. "Gold" is a part of the metal group 11
Answer:
oysters are a good, clams are a good and snails is an insect
Explanation:
<h3><u>Answer;</u></h3>
29 grams
<h3><u>Explanation;</u></h3>
At 20°C, a saturated solution of sodium nitrate (NaNO3) contains 86 grams of solute in 100 m of water.
This means the solubility of NaNO3 at 20°C is 86 g/100 ml of water
The solubility of NaNO3 at 50 °C is 115 grams of NaNO3/100 ml of water.
Therefore; to get the amount of sodium nitrate must be added to saturate the solution at 50°C;
We subtract the solubility at 20°C from the solubility at 50 °C
That is; 115 g/100 ml of water - 86 g/100 ml of water
<u> = 29 grams of NaNO3</u>
Genetic variation can be caused by mutation ( which can create entirely new alleles in a population), random mating, random fertilization, and recombination between <span>homologous chromosomes during meiosis ( which reshuffles alleles whitin an organism's offspring). </span>
Answer:
True
Explanation:
Organic matter in the soil is called "humus". It is formed by the decomposition of plant material by microorganisms.
It is extremely important for retaining water and nutrients in the soil, both of which are crucial for plant growth and survival. Therefore, organic matter in the soil makes the soil much more "productive."
