Which disturbance would result in primary succession?
harvesting wheat by using a combine harvester at the end of the growing season
controlled burning to stimulate the growth of forest trees such as sequoia
the formation of surtsey, a volcanic island off of the southern coast of iceland
the effect of a large herd of elephants on the grasses and shrubs in an area

Option A : the fern transitined from gametophyte generation to sporophyte generation.

Need this store of protein: 

The seed consists of three components: embryo, endosperm (sometimes perisperm), and seed-coat. Both endosperm and embryo are the products of double fertilization, whereas the seed-coat develops from the maternal, ovular tissues. The seed habit is a significant advancement in the evolution of higher plants.

Anatomy of seed :-

Seed storage proteins provide a source of amino acids and reduced N necessary for germination and early growth of the seedling.

The T-chart by categorizing each statement as something that would most likely be relevant to gene flow or genetic drift. Some answers will fit in both columns depending on the situation. is random is a mechanism for evolution is often related to disasters is also called “migration” deals with movement between populations...

Rank the following cities in order of earthquake risk from high risk to low risk:

A scientist look for in a plant that would identify it as a club moss rather than a liverwort.

Astronomers are able to detect the dimmer star because its gravity causes the bright star to . Astronomers can also spot the dimmer star by observing a phenomenon called a(n) binary.

The nerves and muscles communicated with each other to trigger her reflexive response…

when soaked in dilute sodium chloride solution onion gain mass because of the process of osmosis.

 Explanation: Osmosis is a process when there is movement of water from the region of comparatively higher concentration to the region of lower concentration across in a permeable membrane.

Example with explaination :