During respiration oxygen enters the blood and carbon dioxide leaves the blood
Answer: The Heart stage.
Explanation:
Embryonic development or embroyogenesis refers to all the process that take place after the fertilization of ovule to give rise to develped plants embryo.This occur during single or double fertilization.
There are six stages of embryonic developments and they are; the two cells stage, eight cells stage, globular stage, Heart stage, torpedo stage and maturation stage.
The Heart stage is the transition stage where cotyledons that to develop and elongate, rapid cell division occur.
Answer:
B
Explanation:
Competition is defined as an activity done by two opposing sides, both of which are trying to do better than the other.
Answer:
option A 50%
Explanation:
Ability to roll the tongue is dominant to people who cannot. thus only one copy is needed for the trait to be expressed. Thus, a tongue roller could be XTXT, XTXt or XTY and a non could be XtXt and XtY.
Thus one can have the highest percentage of non-tongue roller to be 50% which is from a cross between a tongue roller male and a non tongue roller female.