Alternative methods of producing energy are more efficient than burning fossil fuels. Fossil fuels emit carbon dioxide and other harmful gases to the environment which cause domino effects such as global warming. When the atmosphere warms, the ice melts near the poles and causes the ocean levels to rise. When the ice melts animal's ecosystems are also destroyed. Alternative energy sources can help us sustain our lives in the future. At the rate we burn fossil fuels, we will run out soon. Alternative methods are much safer for us, other animals, and the environment.
The first experiment of the passage shows that treatment with TGFBR1 and TGFBR2 antagonists led to lower levels of epithelial cell production. For this conclusion to be strongly valid, we want to show a positive correlation between TGFBR activity and epithelial proliferation.
The best and most correct answer among the choices provided by the question is G1: follows cell division. I hope my answer has come to your help. God bless and have a nice day ahead! Feel free to ask more questions.
Answer: The right answer for the blank is cleavage. Explanation: After fertilization the next step is cleavage in which zygote divide mitotically. As the embryo move from oviduct down the fallopian tube it divide into two cell and then four cells. four cell embryo is known as blastomere.
