Answer:
The boldface numbers on this beam are grams and the tick marks between the boldface numbers indicate tenths of grams. To find the mass of the object on the pan, simple add the numbers from the three beams. As with a ruler, it is possible to read the front scale to the nearest half tick mark.
3 (I think, sorry if it’s wrong)
Answer:
"Ecological niche is a term for the position of a species within an ecosystem, describing both the range of conditions necessary for persistence of the species, and its ecological role in the ecosystem."
Explanation:
sources: sciencedirect
Enters the left atrium...this is the oxygenated blood from the lungs (pulmonary)
Answer:
Plants absorb nitrogen from: the soil ( second choice)
