I believe the answer to that would be B
Autotrophs make their own food while heterotrophs do not; because of this, autotrophs may survive in certain situations in which heterotrophs would not.
Hope this helps.
The main difference between haploid cells and diploid cells is diploid cells have two complete sets of chromosomes, while haploid cells only have one complete set of chromosomes.
The correct answer is Option: B) Implantation
Implantation is defined as the attachment of fertilized egg or blastocysts to the wall of uterus at the beginning of pregnancy. Occurrence of implantation ensures the women to be described as pregnant.
Other options are wrong.. e.g. Intercourse is only an act between a man and a woman and does not always result in a pregnancy. On the other hand menstruation has nothing to do witha women getting pregnant.
The main 3 things that are found in your blood are waste (leftover food), Carbon Dioxide (what you breathe out), and ammonia
