plants get nitrogen from ammonium and nitrate
Answer: The Big Bang Theory is the leading explanation about how the universe began. At its simplest, it says the universe as we know it started with a small singularity, then inflated over the next 13.8 billion years to the cosmos that we know today.
Because current instruments don't allow astronomers to peer back at the universe's birth, much of what we understand about the Big Bang Theory comes from mathematical formulas and models. Astronomers can, however, see the "echo" of the expansion through a phenomenon known as the cosmic microwave background.
Explanation:
Quartz
Soft and the one with weird air holes
The tongue has a lot of taste buds on it. These taste buds contain the sensory receptors that respond to the food particles. The sensory receptors emit an electrical signal that is carried by the sensory neurons present in the tongue to the brain. The brain has a lot of inter-neurons that help in processing the signal and form bridge between the sensory and motor neurons. The brain analyses and decodes the taste from the electrical signal and relays an output through the motor neurons to the muscles present in the tongue and the cheeks to spit the sour milk out.
Answer:
For a hypothesis to be considered valid, it must make a prediction that scientists can test using a repeatable experiment. If a hypothesis cannot be falsified through experimentation, it cannot be considered part of a valid scientific theory.
