More than 90% on the crust is composed of silicate minerals. Most abundant silicates are feldspars (plagioclase (39%) and alkali feldspar (12%)). Other common silicate minerals are quartz (12%) pyroxenes (11%), amphiboles (5%), micas (5%), and clay minerals (5%).

7 0

3 years ago

A reflex, like automatically removing your hand from a hot stove, involves pain messages sent to the spinal cord by way of _____

maksim [4K]

I believe it’s A) sensory; motor

8 0

2 years ago

Read 2 more answers

The first stage involves creating a filtrate in the ____________ . Second, the filtrate flows through the tubules and useful sub

Fed [463]

Answer:

These are the basic steps of urine formation.

Explanation:

The first step comprises creating a filtrate in the glomerulus.

During the second stage, the filtrate flows through the tubules, and useful substances are reabsorbed.

Waste products will then be secreted by the tubules.

Whereas, the final stage is the conservation of water that occurs in the renal tubule.

There are four major stages in the formation of urine.

3 0

2 years ago