Answer:
D. Transport of oxygen through a placenta to a fetus.
Explanation:
Zygotes are fertilized egg cell, zygotes aren't produced in the ovaries but ovums or egg cells are produced in the ovaries. So option A is false.
Fertilization is internal not external in human. Option B is wrong.
Production of milk happens in the mammary gland (the breast) not in the reproductive system. Option C is false.
Transport of oxygen through a placenta to a fetus. The placenta is a vascular organ which is implanted in the wall of the uterus (a part of the female reproductive system) and links to the foetus through the umbilical cord.
The goal was to see if Earth's ecosystems could be successfully manufactured and maintained elsewhere in the galaxy, should we need to bail on this planet.
It was named Biosphere 2 because it was meant to be the second fully self-sufficient biosphere, after the Earth itself
<span>Active transport means</span><span> moving against a concentration gradient, from a lower concentration to a higher one</span>
Answer:
A
Explanation:
Answer is option one, or A
Ecosystem. Biosphere is a ¨life zone¨ & the hydrosphere is the location of water in our atmosphere. Population is the amount of a particular organism living within a region.
Ecosystem fits the bill.
