Answer:
First Trimester stage of Pregnancy
Explanation:
The first 3 months of pregnancy is called the First Trimester.
This stage is the most critical stage as there is a lesser chance of miscarriage after getting past this stage and the major organ system are formed. The baby’s brain isn’t fully developed yet and the sex is still unknown at this stage. The baby also weighs less due to the underdevelopment.
Ethylene
Ethylene is a hydrocarbon chemical emitted from most
fruits that promotes ripening. When fruits are bunched together this
creates more ethylene and thus ripens each fruit faster. The more fruits
are bunched together, the more ethylene is produced and the faster all
the fruits ripen - this is why sometimes the fruits at the bottom of a
carton are much riper than at the top, because they are soaked in
ethylene.
They could improve the experiment that they made by adding another variable such as: watering the plants with fresh water. This way they could have a better comparison how plants grow based on the type of water they are exposed with.
I think you forgot to give the options along with the question. i am answering the question based on my knowledge and research. "One group of bears was less highly evolved less than the two other groups and was destined to die out" is the one that explains why only one group of bears were extinct. I hope the answer has helped you.
Answer:
crust closer to a mid-ocean ridge moves away from the ridge and toward a deep-ocean trench. Sea-floor spreading and subduction work together.
Explanation:
