Answer:
physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance. Physical properties include color, density, hardness, and melting and boiling points. A chemical property describes the ability of a substance to undergo a specific chemical change
Answer: Selectivity of mineral nutrients absorbed by roots
Explanation:
The Casparian strip in the plants are waxy coating found in the roots of the plant which helps in absorbing excess of water into the plants.
These strips thickens the walls, thus preventing the excess of soil solution from being pulled by the roots into the central part of the plant.
It helps in selecting the type and amount of nutrient into the plant but the plant having no Casparian strip will reduce the selectivity of the nutrients.
Answer:
It has shone a light on our (I live in the u.s.) raciest past and now more then ever people are listening to science, even more so depending on it!
Elements are made up of only one type of atom, whereas compounds are made of of two or more elements that are CHEMICALLY BONDED (called molecules). Note the difference to mixtures, which consist of atoms or molecules in a substance and are NOT chemically bonded.
I hope this helps, let me know if you need clarification!
