Hmm, learning about this what a while back, but i would say (1)
answer is C- lesson 4 page 11: The Dermal tissue contains the epidermis as well as root hairs.
Answer:
Free nitrogen is simply molecular nitrogen (N2). Nitrogen, in its molecular form, consists of two nitrogen atoms bound together with a tripple bond. ... So basically, any nitrogen that is in an organic compound is considered “fixed” nitrogen and N2 is considered to be “free” nitrogen
Explanation:
For an atom to become a positively charged ion it must lose negatively charged electrons.
Answer: They may be wind blown, rain splashed, carried by animals, or moved in soil or water. Almost all short-distance spread is through these natural dispersal mechanisms. In their home territory, short distance spread is rarely a problem because the resident plants and animals have evolved to coexist more or less peaceably.
Explanation: