Answer:
Angiosperms evolved during the late Cretaceous Period, about 125-100 million years ago.
hope it helps.
Answer: From top to bottom- T, C, G, A, T, A, T
Explanation:
These are the nitrogenous bases that make up a part of nucleotides in DNA.
There are 4 bases in DNA:
- Adenine
- Guanine
- Thymine
- Cytosine
The bases pair together from A to T and G to C, the way I remember is just reading it as AT GC and it works for me, but you make want to make an acronym if it helps you remember better.
As a result, all you have to do is type in the corresponding base to form the correct base pairs.
Answer:
[4]
1. Nasopharynx
2. Trachea
3. Lung
4. Diaphragm
Explanation:
Sorry don't know anything about plants.
Answer:
Water sample showing pink/purple color is an error.
Explanation:
Biuret is a blue color reagent that changes its color to pink/purple whenever it detects protein in a sample. Water don't contain proteins so it should not show pink/purple color instead it should maintain the blue color. Food items generally contain proteins so it show pink/purple color but it showed blue color.
Error might have caused by wrong marking of the samples, test tube marked with Water might contain a mystery food while Mystery food tube might contain water.
