Explanation

Suspended particulate matter (SPM) SPM

It is one of the essential particulate contaminants that transport heavy metals in the river system.

Additionally, it is one of the phases of heavy metals in aquatic ecosystems

Explanation

The law of independent assortment states that genes for different traits are distributed to gametes independently of one another, leading to a variety of genetic combinations in the offspring.

Explanation

Sea cucumbers belong to the class Holothuroidea within the phylum Echinodermata.

Unlike some other echinoderms like starfish (class Asteroidea), sea cucumbers do not have arms that are sharply set off from a central disc

Explanation

The class Solenogastres (also known as Solengasters) lacks a shell and possesses sclerites, which are small, hard, plate-like structures embedded in the skin.

These organisms are part of the phylum Mollusca, specifically in the class Solenogastres.

Explanation

Ray-finned fishes are present in the class Osteichthyes.

This class is characterized by having a skeleton made of bone and includes the vast majority of fish species.

Explanation

Barack Obama was elected as the first African American president of the United States in 2008.

He was inaugurated on January 20, 2009.

He was the 44th President of USA.

Explanation

We are given: (-2x)^3

To solve this, we need to cube both -2 and x separately:

(-2)^3 * x^3

Calculating the cube of -2:

(-2) * (-2) * (-2) = -8

So, the expression becomes:

-8 * x^3

Explanation

The range of a data set is calculated as the difference between the maximum value and the minimum value:

$$\text{Range}=\text{Maximum value}-\text{Minimum value}$$

Given:

• Minimum value = 5
• Range = 50

Substitute these values into the formula:

$$50 = text{Maximum value} - 5$$

Solving for the maximum value:

$$\text{Maximum value}=50+5=55$$

Explanation

These are the best restaurants in town, but those are too expensive.

This sentence is grammatically correct as it maintains subject-verb agreement and proper pronoun usage.

Explanation

The word "expostulation" refers to expressing strong disapproval or disagreement.

The correct prepositions are "about" (to express disapproval regarding something) and

"in" (indicating the time frame or period, such as during a specific dynasty).