Sea stars (starfish) can reproduce asexually by fragmentation if their arms are cut off, or sexually by releasing sperm and eggs into the water. which of these is the major difference between asexual and sexual reproduction in sea stars?
a)the chromosome number is reduced in sea stars during asexual reproduction. b)the number of chromosomes is increased in sea stars during sexual reproduction.
c)the appearance of the sea stars is changed as a result of asexual reproduction. d)there is genetic variation in the sea stars as a result of sexual reproduction.

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.

Forensic scientists think they know the identity of a skeleton. what rule should they use to select a relative whose dna could be used to try to confirm the identity?

Which is an inner plant a. earth b. saturn c. jupiter d.neptune