A cactus is a type of plant that grows in the desert. An adaptation cacti have developed to survive in the hot and dry desert is A)
the use of desert insects for their pollination
B)
the ability to create shade to avoid the hottest part of the day
the development of spines to discourage birds from landing on them
D)
the ability to store large amounts of water in their stem and roots.

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

What best explains the inability for life to exist in earth early atmosphere

Scientists are conducting a study on the effectiveness of a new drug on memory loss. they are giving some of the test subjects the new drug to find out if it improves their long-term memory. which are possible limitations of this study? check all that apply. a) test subjects may want to participate in additional experiments. b) test subjects may think they should be paid more. c) test subjects may get bored and want to quit early. d) test subjects may have to travel during the experiment. e) test subjects may have full-time jobs. this is multiple choice. you for the !