Positive ions from a base and negative ions from an acid form a it helps for example ypu have positive ions right well take my smart advice well the positive ions and the negative ions they combine together to make sulphour
Cell membrane would be corr3eect
Nitrogen Fixation: Root and Bacteria Interactions. Nitrogen is an important macronutrient because it is part of nucleic acids and proteins. ... The most important source of BNF is the symbiotic interaction between soil bacteria and legume plants, including many crops important to humans.
Answer:
They live in or around freshwater ponds, lakes, rivers, marshes and swamps.
Explanation:
I'm pretty sure it would be D... If that's wrong I'm sorry.
