Answer:
organic fertilizer can cause less harm to the plant & environment as it isn't toxic (completely natural) as opposing to fertilizers, which is filled with toxic chemicals.
You just have to read it over again and youll get it very easy
Answer:
Agriculture
Explanation:
Anthropogenic activities are activities caused or influenced by humans. In ecological succession, changes can also be induced by human activities. One of the activities that can be engaged in by humans to provoke ecological succession is AGRICULTURE.
Performing certain agricultural practices can alter the composition and structure of a community, hence, resulting into ecological succession. Therefore, AGRICULTURE could be an anthropogenic factor that would influence ecological succession.
N.B: the other two occurrences are natural disasters.
Answer: The biologist is working on ecosystem level of ecological study.
Explanation:
The ecosystem of ecological study Is the study that comprises of the large communities of living organisms i.e plants, animals, microbes also called the biotic factors interacting or linked with the non living aspects of the environment known as abiotic factors. The known living aspects are water, soil, air e.t.c.
The biologists study is an ecosystem level of ecological system because He or she is studying toxin flow from biotic factors to abiotic factors.
<h2>Xylem;phloem and cork</h2>
Explanation:
Wood is mainly known as secondary xylem found in trees
- Xylem is basically the vascular tissue which is responsible for the conduction of water and nutrients from the roots to shoots and leaves
- Secondary xylem is formed from secondary growth and is associated with lateral growth and grows from the vascular cambium
- Its cell walls are thickened by deposition of lignin which provides mechanical support to plants and consists of tracheids and vessels that are shorter and wider
- In large woody plants secondary xylem get differentiated into heartwood and sapwood
Bark is essentially made of phloem and cork
- Bark sole purpose is to provide protection to trees
- The inner bark is produced by vascular cambium which consists of secondary phloem whose innermost layer transports food from the leaves to rest of the plant
- The outer bark is a dead tissue which is the product of cork cambium
