The nucleus is inside of a cell and is enclosed with the cell membrane
I believe the answer is <span>Alcohol
</span><span>Alcohol is one of the most common teratogens. Many mothers don't realize that they are pregnant still consume alcohol until a few weeks of pregnancy. Alcohol has effects on the nervous system and the fetus will keep being susceptible in all three trimesters of pregnancy.
</span><span>Fetal alcohol syndrome includes the low birth weight, low head circumference, and many kinds of symptoms related to nervous system.</span>
Answer:
Mediterranean ecosystems of southern California are some of the most ecologically diverse systems outside of the tropics. The richness and diversity of plants and animals, as well as high rates of endemism, make the area a biodiversity hotspot
Explanation:
Positive feedback in a system is a benefit for the entire system
Answer: Option B
<u>Explanation:</u>
The positive mechanism is a stimuli that the body exhibits when in time of need which actually benefits the entire system. When required the positive feedback runs to rescue and neutralize the effect caused by the negative impact which paves a way to maintain equilibrium throughout the body.
Many examples can be cited for this like blood clotting, during labor and even in ripening of fruits. Positive and negative feedback work hand in hand to maintain homeostasis in place. Positive feedback is required to enhance the system while the negative feedback is to inhibit the activity.

1 minute of latitude is equal to 1 nautical mile.
Just like an hour of time, there are 60 minutes in a degree of latitude.
Therefore, there are 60 nautical miles in each degree.