Answer:
The importance of ecosystem stability is that if the ecosystem is not stable then it cannot survive. A current example of an unstable ecosystem in the Amazon Rain forest. It has been delt so much damage that it is begining to self destruct and kill itself as well as emit greenhouse gases instead of slowing them.
Explanation:
Answer: cola-flavored soda: 2.6
cranberry juice: 2.9
pickle juice: 5.5
Explanation:
The substances given are:
cola-flavored soda: 2.6
cranberry juice: 2.9
dish soap: 7.3
pickle juice: 5.5
seawater: 8.0
lye soap: 13.0
Based on a pH scale, an acidic solution is one that has a pH that is below 7, a solution is neutral if the pH is 7 while a basic solution has a pH of above 7.
Therefore, the acidic substance will be:
cola-flavored soda: 2.6
cranberry juice: 2.9
pickle juice: 5.5
<h2>It contains toxins</h2><h2>It killed off bird populations.</h2><h2>It caused harm to human populations.</h2>
Explanation:
Let us understand the term DDT
DDT : Dichlorodiphenyltrichloroethane
- This is a crystalline chemical compound
- Basically used for protecting insects eating crops
- It is colorless, odorless, tasteless
- Initially used as pesticides
It killed off bird populations: Though it does not kill birds directly by consuming, it has indirectly damaged the egg by making the egg's shell too thin which gets broken easily.
It controlled diseases like malaria: Since this option talks about positive attribute of DDT, this option stands invalid. This chemical compound controls mosquitoes attacking the crop.
It caused harm to human populations: DDT causes vomiting, tremors or shakiness, and seizures
It contained toxins: It contains moderate toxins.
Answer:
The correct answer will be option-E.
Explanation:
Chordae tendinae are the string-like structure in the heart which is composed of dense regular connective tissue called collagen and elastin proteins. They arise from the papillary muscles of the heart and branches out in the ventricle portion of the heart.
These play an important role in the closure of the AV valves to prevent the backward flow of the blood to the atria during ventricular contraction by holding cusps of the valve into the dome-shaped structure.
Thus, option-E is the correct answer.
Covalent bonds share electrons between two atoms.
