Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
Answer:
- If it were true, all organisms would be complex and simple organisms would disappear
- It does not account for genetic mutations known to affect physical traits
Explanation:
Lamark's theory of evolution is that changes in the organism's physical form during its lifetime can be passed on to its offspring. In other words, he believed that children can inherit acquired characteristics from their parents.
The classic example is that he believed giraffes evolved long necks because they would stretch upwords to eat leaves from tall trees, elongating their necks, and then would pass on a longer neck to its children. Or in humans, that a body builder would make a muscular child because of their intense training!
There are a few problems with this theory:
- If we believe this theory, organisms would always be getting more and more complex and 'improved', so simple organisms would disappear.
- We know that changes to the DNA influence inherited physical characteristics, not simply continued use
Answer: 27
Explanation:
Cobalt is a chemical element with the symbol Co and atomic number 27. Like nickel, cobalt is found in the Earth's crust only in a chemically combined form, save for small deposits found in alloys of natural meteoric iron.
I did some research and found that the average human requires 550 L of
oxygen per day which means that :
(550 L O2 / day) x (1 day / 24 hours) = 22.9166667 L O2 / hour or
22916.67 mL O2 / hour
1 mL = 1 cm^3
22916.67 mL O2 / hour = 22916.67 cm^3 O2 / hour
Now convert that volume from cm^3 to nm^3
22916.67 cm^3 O2 / hour = 2.29167x10^25 nm^3 O2 / hour
So for 1 hour’s worth of O2, we need a volume of 2.29167x10^25 nm^3
Ribosomes - Make protein
Golgi Apparatus - Make, process, and package proteins
Nucleus - Stores the DNA and coordinates the cell's activities
Mitochondria - Make energy out of food
Vacuole - Storage for food and water
Lysosome - Contains digestive enzymes that help break down food
Plant cells (only) -
Cell wall - Protection and support
Chloroplast - Uses sunlight to create food using photosynthesis
I hope this helps :)
