Answer:
A hydrogen atom is made up of a nucleus with charge +1, and a single electron. Therefore, the only positively charged ion possible has charge +1.
Explanation:
Hope this helps
The possible cause for a decrease in ecosystem productivity is : B. a decrease of the biodiversity o an ecosystem
Decrease in biodiversity means that there will be less organisms that support each other to maintain the balance in the ecosystem, which eventually decrease its productivity
No idea what this means free points
Answer:
The correct answer would be - True.
Explanation:
In several organisms have structures, has no apparent role in the particular species and are residual parts from a past ancestor, but these structures were fully functional in the ancestors of the species. These structures are called vestigial structures or organs.
The example of such structures are, wings of the flightless birds, appendix of human and many other, all these structures has no function in the body of the individuals of the particular species but is fully functional in ancestors.
Thus, the correct answer is - true.
