Sarah is testing the effect of pollution on plants. She has 50 tomato plants. 1 point Group 1 contains 25 plants grown away from the source of pollution. The
other 25 plants, or group 2, grow in the presence of pollution. Sarah makes
sure all of the plants get the same amount of water, sunlight exposure, and
fertilizer. For 1 month, she observe the plants weekly. Her observations
include how the plants look and changes in plant height. Sarah's data
shows that plants in the experimental group all had stunted growth (short)
and poor leaf color (yellow). What is the independent variable? *
Pollution
Sunlight
Fertilizer

Which of these best describes wde by replicating the chromosomes c) the cytoplasm is divided between the two new daughter cells d) the nucleus opens to allow the chromosomes to enter the cytoplasm

What does the hardy-weinberg principle relate to? a. chances of survival of an organism b. frequency of alleles in a population c. natural selection in a species d. causes of evolution among organisms

One function of the poly-a tail on eukaryotic mrna sequences is to the mrna be transported from the nucleus to the cytoplasm. prokaryotic mrna also has a poly-a tail. choose the best explanation of the prokaryotic poly-a tail. a. prokaryotic poly-a tails are composed of a different molecular structure compared with eukaryotic poly-a tails. b. prokaryotic poly-a tails have the same functions as eukaryotic poly-a tails, because this process is highly conserved throughout different species. c. prokaryotic poly-a tails aren't important, because prokaryotes don't have nuclei. d. prokaryotic poly-a tails have other functions, because prokaryotes don't have nuclei.