Cell wall is the outer permeable covering in all pants and almost all prokaryotes ! cell wall are mainly made up of cellulose , sometime by chitin!!
Function of integumentary system: PROTECTION<span>- barrier against infectious, chemical, radioactive, and physical damage.
- keratin and junctions block bacteria, fungi, and blunt objects.
-macrophages identify foreign particles and activate immune response.</span>
An ecosystem is defined as a community of living organisms as well as the nonliving components in the natural environment (such as the air and the water) that interact together through their nutrition cycle and the flow of their energies.
Ecological systems provide purification of air and water. They cycle nutrients and are considered as massive containers for recycling/
Answer:
KrF2 + H2O -> Kr + O2 +2HF
Explanation:
You would just need to add a 2 on the HF, because on both sides it can balance with 2F's and 2 H's
Answer:
The answer is: Scientific theories do not become scientific laws; they are explanations for natural phenomena based on evidence.
Explanation:
The other answers talk about how 1) Science should be bias or opinion based 2) Scientists only take each other's word and 3) Science never changes. All of these are false. Science <em>does </em>sometimes change, it should <em>not </em>be bias or opinion-based, and scientists do not always take each other's words.