Answer:
The given statement is True.
Explanation:
Scala media has endolymph as its constituent and endolymph is rich in Potassium ions (K+)
whereas
Scala tympani and scala vestibuli has in its composition Perilymph and Perilymph has sodium ions as their major constituent ions.
Therefore, scala media is Potassium ion rich while scala tympani and vestibuli are sodium ion rich.
Cells,tissue,organ organism,organ system
Answer:
Option B, Mammals and reptiles in the post-dinosaur age.
Explanation:
Adaptive radiation is mechanism through which species evolve very fast from common single ancestors. In simple words two different species are said to have evolved through adaptive radiation when they have descended from a single lineage. This is not the case with mammals and reptiles.
Generally in adaptive radiation, a species evolve when it faces new environmental challenges due to change of habitat or area. For example mammals have evolved from dinosaurs.
Hence, option B is correct
Explanation:
environmental environmental impacts of mining can occur at local, regional,and global scales through direct and indirect mining practices. impacts impacts can result in erosion, 5 roses, loss of biodiversity, order contamination of soil, groundwater groundwater,and surface water by the chemical limited from mining process. Europethese processes also have an impact on the atmosphere from the emissions of carbon dioxide which have effect on the quality of human health and biodiversity.
Answer:
What the scientist is doing incorrectly is hitting a rock with a hammer without protective equipment and on the same table where containers with chemical or biological substances are found.
Explanation:
Biosafety is an important aspect of laboratory work. Conducting studies in rocks, trying to fracture them with the use of a hammer is an incorrect practice carried out by a scientist when he does not use protective equipment and has containers with substances on the same work table.
<h3>what could he do to make their work in the lab safer?</h3>
- <em>Wear gloves, protective apron and protective eyewear.</em>
- <em>Break the rock on a work table where there are no containers that could break by accident, spilling their contents.</em>
<h3>why is it important to follow these procedures?</h3>
It is important to follow these procedures because injuries to hands, body or eyes can be avoided by fracturing the rock. In addition, it prevents the breakage of containers with chemical or biological products, which could contaminate the work area or cause damage to the scientist.
