Answer:
Citrus greening disease
Explanation:
The symptoms sound like citrus greening disease. This disease is characterised by yellowing of the veins in the leaves, splotchy mottling of the entire leaf, leaves that fall off too early, and fruit that can turn green and tastes bitter.
Citrus greening disease is caused by a bacteria, and transferred by insects such as the Diaphorina citri.
I think the correct answer from the choices listed above is the first option. The abiotic component that would most likely change in a shallow ocean ecosystem during upwelling would be an increase in oxygen content. Hope this answers the question. Have a nice day.
Fern spore germinates into prothallus.
Explanation:
Ferns are members of phylum pteridophyta, the vascular cryptogams.
These are first land plants which are known to have a distinct conducting system of xylem and phloem.
They reproduce by forming spores that germinates into a heart shaped gametophyte.
The gametophyte of the fern is called prothallus.
The heart shaped gametophyte has root like structure called rhizoids.
These rhizoids anchor the gametophyte to the substratum.
Because the worm replicated its DNA so it is like two separate organisms.
The answer is Anthropogenic
Instances of anthropogenic activities (human activities) that have resulted in climate change include burning of fossil fuels that have increased the levels of carbon dioxide and carbon monoxide in the atmosphere. The gases create a greenhouse effect and cause climate change.
