Answer:
Cambrian explosion
Explanation:
Cambrian explosion is a geological event that happened during the Cambrian age (541 million years ago). In this period, most of the animal phyla (including marine) appeared and their geological record is preserved in the form of fossils. The period lasted for 13-25 million years. Before this period, the organisms were very simple. They were mostly unicellular in nature and were living in the form of colonies.
The remaining three options are incorrect. They are tectonic events that reflect movement of continents in different geological times. None of them resulted in the diversification of (marine) animal phyla.
Answer:
A climax community develops
The glacier retreated, leaving barren only rock
Lichen and other pioneer species grown on the rocks
Rock is broken down and converted into soil
Grasses and flowering plants grow in the soil
Shrubs and small trees grow in the soil
Small pine trees grow in the soil
Explanation:
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Answer: 1. domain 2. kingdom 3. phylum 4. class 5. order 6. family 7. genus 8. species
Explanation:
This can provide a direction to give the appropriate and best management to the patient. THis can enhance the quality of healthcare and reduced the erroneous work which can be dangerous or fatal to the patients. Provide access to care and contain the cost of health services. This can be achieve with the use of intuitive thinking, leadership and learning from previous experiences. This can be combined for an effective approach.
Answer:
The correct answer is A. 25 percent
Explanation:
Let R is the dominant allele that gives round seed and r is the recessive allele that code for wrinkled seeds. So as the parent plants are heterozygous for round seed that means they have genotype Rr.
When they will cross with each other than 25% of the offspring would be wrinkled because only individuals with homozygous recessive genotype i.e, rr would be wrinkled and out of 4 only 1 individual with rr genotype would be produced.
R r
R Rr Rr
r Rr rr
Therefore the correct answer is A. 25 percent.