A cross section of a seed is shown.
Which is represented by the letter X?
embryo
seed coat
stored food
leat
S
IL

How does pregnancy begin? a) a placenta forms in the uterus b) a sperm reaches an egg in the fallopian tubec) the blastocyst differentiates into two cell types d) contractions begin in the uterine wallapex

Ronald wants to see if a new shower cleaner works better in removing soap than his old cleaner. he uses the new cleaner on one half of the shower tiles and his old cleaner on the other half. identify the independent and dependent variables in this experiment. enter your answer in the space provided.

Is a measure of the different types of organisms in a community. question options: tertiary secondary primary none of the above