The Oxygen-Carbon Dioxide Cycle. Plants use carbon dioxide in a process known as photosynthesis. During photosynthesis, plants give off oxygen as a waste product. ... Animals breathe in the oxygen made by plants and breathe out carbon dioxide as a waste product.
Answer:
You would have to change your hypothesis.
Explanation:
Experiments can always go "wrong", but they are important because they provide evidence that maybe is not the fertilizer the variable that is influencing plant growth. After this you could change the experiment taking into account new variables such as pH, amount of water or sunlight etc.
Answer:
oxygen, hydrogen peroxide and the halogens.
Explanation:
Answer:
because it is a moon of Saturn
because it is covered in ice
because it has a deep ocean beneath ice
because there is a chance it hosts life
because it has an atmosphere similar to Earth
Explanation:
Answer:
In nature, populations are usually evolving. The grass in an open meadow, the wolves in a forest, and even the bacteria in a person's body are all natural populations. And all of these populations are likely to be evolving for at least some of their genes. Evolution is happening right here, right now!
To be clear, that doesn't mean these populations are marching towards some final state of perfection. All evolution means is that a population is changing in its genetic makeup over generations. And the changes may be subtle—for instance, in a wolf population, there might be a shift in the frequency of a gene variant for black rather than gray fur. Sometimes, this type of change is due to natural selection. Other times, it comes from migration of new organisms into the population, or from random events—the evolutionary "luck of the draw."
I hope this helps a little bit.
