Consider the four organisms you see here. Each represents a specific kingdom. They all exhibit the characteristics of life. Think about their life cycles. Compare and contrast the life cycles of the four. How do they differ?
A)
B)
Both the protist and the bacteria reproduce asexually. Their life span is
very short, less than a year, and they do not have stages of development,
Both the animal and the plant exhibit stages of growth during their
lifetimes. They have what might be described as a mature stage. The other
two, protist and bacteria do not.
Only two organisms reproduce sexually and have several life stages; the
plant and animal. The other two, the protist and bacteria, may have an
advantage because potentially can live forever.
The life spans of each kingdom vary greatly. The animal has the longest
life span and more stages of life during development than the others. The
bacteria, because it is the simplest, has the shortest life span
C)
D)
Cessa System

1. the passing of is the basis of heredity. 2. our encode the instructions that define our traits. 3. each of us has thousands of genes, which are made of and reside in our chromosomes. 4. in addition to our genes, the we live in also define our traits. 5. humans have two complete sets of chromosomes. 6. when parents conceive a child, each parent contributes set of chromosomes. 7. every child receives of its chromosomes from the mother and half from the father. 8. this transfer takes place at when the father’s sperm joins the mother’s egg. 9. while most cells in our bodies have two sets of chromosomes, or a total of egg and sperm each have chromosomes. 10. when egg and sperm unite they create a single cell called a 11. each parent contributes complete set of chromosomes to their child. 12. since the parents contribute the chromosomes to each new child, every child inherits a unique set of chromosomes. 13. as a result, every baby will have a combination of traits.

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

This is the interaction of two organisms where one is and the other is neither nor harmed.