Answer:
This is history not biology
Explanation:
Next time make sure you write the correct subject
These fossils are very useful for us because we can use them to date the layers of rock that they are found in. Fossils that can be used in this way are called index fossils, and rock layers with the same index fossils in them can be correlated. Not my answer, link here for full
http://peter-mulroy.squarespace.com/correlating-rock-layers/
Answer:
The form of cell to cell signalling that is been used is ENDOCRINE.
Explanation:
There are four ways by which cell signalling occur in the body, these are: endocrine, paracrine, autocrine and direct signalling.
Endocrine signalling is the biochemical process by which hormone secreting glands release hormones into the blood streams and that hormone has effects on target organs that are located far away from it. Endocrine hormones are usually stable and their effects usually last for long time.
If there were no decomposer then the waste would just sit there and it wouldn't be released back into the ecosystem, so then producers wouldn't have much nutrients.
N addition, changes in biodiversity<span> can </span>influence ecosystem<span> processes (5). .... aid plant nutrient uptake from soil, increase primary production and speed </span>succession<span>. .... in a given year, but to decrease the chances of crop </span>failure<span> in a bad year.</span>
