The diagram shows a food web in a grassland.

A diagram of a food web is shown. Arrows are drawn from grass to grasshopper, grass to squirrel, grass to mouse, grasshopper to the lizard, grasshopper to hawk, squirrel to hawk, mouse to snake, mouse to hawk and snake to hawk.

What best describes the role of the mouse in the food web?

Group of answer choices

A primary consumer that is food for the snake and hawk

A secondary consumer that is food for the snake and hawk

A primary consumer that is food for a single predator, the snake

A secondary consumer that is food for a single predator, the snake

A. Primary consumer that is food for the snake and hawk

Explanation:

The grass would serve as the bottom of the pyramid; The producer.

The producer is what gives energy to the primary consumers; grasshopper, squirrel, and mouse.

Since the mouse is gaining sustenance and energy from the producer, it is labeled as a primary consumer.

The mouse is said to have an arrow towards both the snake and hawk, meaning it is consumed by both.

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation:

not sure if this what   you'r looking for would be percent composition