Hi,
I think the answer is the third one.
I hope this helps. If you’d like further explanation please let me know. Also, English is not my first language, so I’m sorry for any mistakes.
Explanation:
The stages in order are egg cell, zygote, embryo and fetus. Zygote is what comes right after fertillization, so the answer is 4. zygote.
Concentration = mass / volume
Concentration = grams / liters
Concentration = 25 / 8
Concentration = 3.125 g/L
Explanation:
i do numerous questions with answers to get idea of questions that are tested