Students are observing two families of ducks living in the school pond. They decide to do a scientific investigation that involves the ducks. The students have only one class period to complete the investigation. Which of the following is a valid hypothesis the students could investigate? A.
Ducklings think humans are funnier than adult ducks do.
B.
Ducks first came to the pond due to its high level of water quality.
C.
Ducklings will likely move to a new pond when they are fully grown.
D.
Ducks from different families will not feed within 10 feet of one another.

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.

Sea stars, sea urchins, sand dollars, and brittle stars are all memeber of a group, what is the common name of the group they are all in

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?