During a camping trip, sierra collected dry branches and broke them into smaller pieces. she then placed the sticks in a fire pit and used a match to light the sticks on fire. next, she propped a metal pan of water over the fire and heated it until the water boiled.

which list correctly describes physical and chemical changes that occurred in this scenario?

a. physical change: breaking sticks
chemical changes: lighting the fire, boiling water
b. physical change: boiling water
chemical change: breaking sticks, lighting the fire
c. physical changes: lighting the fire, boiling water
chemical change: breaking sticks
d. physical changes: breaking sticks, boiling water
chemical change: lighting the fire

Which of these is most likely to happen if parallax measurements of star distances are taken after a gap of six months? the results would be accurate the results would be inconsistent the results would not be valid the results would not be repeated

Will mark brainliest i only need the ! 1.use ten beads and a centromere of one color to construct the long chromosome. use ten beads and a centromere of a second color to construct the second chromosome in the long pair. make a drawing of the chromosomes in the space below. 2. for the second pair of chromosomes, use only five beads. 3. now model the replication of the chromosomes. make a drawing of your model in the space below. part b: meiosis i during meiosis i, the cell divides into two diploid daughter cells. 4. pair up the chromosomes to form tetrads. use the longer tetrad to model crossing-over. make a drawing of the tetrads in the space below. 5. line up the tetrads across the center of your “cell.” then model what happens to the chromosomes during anaphase i. 6. divide the cell into two daughter cells. use the space below to make a drawing of the result. part c: meiosis ii during meiosis ii, the daughter cells divide again. 7. line up the chromosomes at the center of the first cell, one above the other. separate the chromatids in each chromosome and move them to opposite sides of the cell. 8. repeat step 7 for the second cell. 9. divide each cell into two daughter cells. use the space below to make a drawing of the four haploid cells

Which of the following is an abiotic factor in an ecosystem? a. bacteriab. airc. niched. grass(abiotic=non-living) me !