Answer:
because they want ppl to waste time on stuff we dont need to learn
Explanation:
unless we wanted to be a scientist
1. Testing only one variable
A controlled variable means its the one that stays the same. In a controlled experiment, it means there is only one manipulated, (changed) variable.
Answer:
Provide a closed environment.
Clean the hatch chamber with chemical.
Explanation:
Biosecurity is a measure which is taken in order to protect or prevent the population of existing species from infestation of harmful organisms and chemical substances. The hatchery should provide a closed environment in order to prevent the entry of harmful organism. Cleaning of the chamber where eggs were hatched with chemicals in order reduce the infestation of microorganism.
Answer:
It means the proportion of the incident light or radiation that is reflected by a surface, typically that of a planet or moon.
Explanation:
There you go :)
Answer:
Phytoplankton use carbon dioxide and produce oxygen during photosynthesis; phytoplankton, fish, and seals use oxygen and produce carbon dioxide during respiration. Which can provide the most energy in an ecosystem
Explanation:
