The little dots collected from under the fern leaves are spores, not seeds. Ferns are different from seed-bearing plants in that ferns in a sexless way through sporophyte generation. Spores dropped from or taken from grown fern leaves have developed prothallium. Each prothallium generates male and female organs in what is called the gametophyte stage. When fertilization of the female gametophyte happens, small fern plants or leaflets start to grow.
Amino acids. These class of compounds
are considered the building blocks of most organisms, and around 500 of these
are known and indentified. All proteins, carbohydrates, and nucleic acids are
polymers ("many units") and each unit is an amino acid.
The ATP molecule act as a power source for a cell. it is someone's compared to a battery.
Well it depends on the amount of chemical. hope that helped
Answer:
1. and 4.
Explanation:
For #1: Outside of a lab, different people's bodies may respond differently to the drug due to a one or many factors such as those listed in the response.
For #4: Pathogen mutations as well as bacterial growth and spread may render the drug incapable of curing the pathogen due to there simply being more bacteria in one person than the drug can handle.
