A scientist is studying the effect of nitrates, a group of chemicals, on the aquatic environment and the organisms that live within it, such as aquatic snails and fish. This scientist is a(n) . A)
entomologist
B)
chemist
C)
hydrologist
D)
oceanographer
E)
toxicologist

A scientist who studies water and its properties is a hydrologist.

Explanation:

A hydrologist is a scientist linked to the study of water, both surface and underground, detecting cleanliness or contamination and proposing alternatives for its cleaning and conservation.

A hydrologist's research on the properties of water, its location, distribution and circulation contributes to the maintenance of the environment.

The other options are not correct because:

    A)  Entomologist : a scientist who studies insects.

    B)  Chemist : a professional who studies the elements and chemical compounds and their properties.

    D)  Oceanographer : study both oceans and seas, and their relationship with the environment, the atmosphere and the land.

    E)  Toxicologist: study the effects of toxic or harmful substances on living beings and the environment.

sand 60

clay 10

silt 30

sandy loam should be dominated by the sand. as the amount of sand increased, the amount of slit needed to anchor the plants' roots to the sand will also be increased. even though the amount is very little, 10% part of clay is still necessary for proper oxidation.

starchy vegetables are high in carbohydrates.

starchy vegetables contain more carbohydrates than non-starchy vegetables.

explanation:

there are two primary categories of carbohydrates, essentially differentiated on the basis of their carbohydrate content (which is in the form of starch - a complex carbohydrate):

those vegetables which contain little amounts of starch are termed as non-starchy vegetables, and some examples include: artichokes, broccoli and bean sprouts.

vegetables high in their starch content are distinguished as starchy vegetables, and some examples include: potatoes, chickpeas and corn.