The study pushes back the clock on the origin of Earth's water by hundreds of millions of years, to around 4.6 billion years ago, when all the worlds of the inner solar system were still forming. Scientists had suspected that our planet formed dry, with high-energy impacts creating a molten surface on the infant Earth.
Answer: 4.6 billion years.
the answer is fossils I just took the test seismographs is incorrect
Answer:
An intrauterine device, also known as intrauterine contraceptive device or coil, is a small, often T-shaped birth control device that is inserted into the uterus to prevent pregnancy. IUDs are one form of long-acting reversible birth control.
B.
The other options all tell you the type of nucleic acid it is.
Answer: The introduction of a plant variety The introduction of a plant variety
that is resistant to insect pests.
Explanation:Gene flow can simply be said to be gene movement from one population to another population.
Gene flow can also mean the movement of the pollen across from one population of white spruce to another. It can be in the form of introduction.
