<span>d. by sending and detecting chemical messages</span>
Horticulturalist’s best option is clone the desired tulip so there will be no genetic variations.
Explanation:
Cloning is a process by which replica of organism is made without having any genetically variations. It is done carefully to avoid any variations in the office bring that may be related to physical or genetic structure.
The process of cloning should be done under the supervision of expert to avoid any error which could lead to the variation in genetic structure. It is very necessary for the amateur horticulturalist who desires to have dual apps without any genetic variation to perform cloning.
The term that refers to all areas of Earth where all life exists is call the Biosphere
Answer:
Option B, 
Explanation:
Given-
The average surface area of one foot pad of an elephant is 
Weight of an Asian elephant is 
newton
As we know, pressure is equal to total weight divided by total area of the surface on which it is concentrated.
Thus, pressure on one foot pad of elephant is 
Hence, option B is correct answer
D! Because a gas takes its form and volume of its container
