Put the following stages of development in order ...

a. Blastocyst implants in uterus,

b. zygote forms,

c. heart begins beating,

d. lungs can breathe air,

e. sex organs become visible

Which best compares DNA and RNA with regard to the process of protein production? DNA transforms from a nucleic acid into a protein, and RNA remains a nucleic acid. RNA transforms from a nucleic acid into a protein, and DNA remains a nucleic acid.

In an ecosystem, a fungus, functions as a

How do classification systems change over time?

According to genetic evidence, two main lines of descent emerged from the last universal common ancestor. One of these lines gave rise to the a. Archaea and Eukarya. b. Bacteria and Archaea. c. Bacteria and Eukarya. d. Eukarya, Bacteria, and Archaea.

Ocean tides result largely from the gravitational attraction of the A. core of Earth. B. sun. C. closest neighboring planets. D. moon. I think it's the moon ... Am I wrong?

there are four trophic levels in a food chain: Algae, salmon, bears and humans. if algae produce 6500 kj of energy, calculate the amount of energy that is passed on to each trophic level

Animal cells are permeable to water and urea but NOT to sucrose. The inside of a cell contains 1 M sucrose and 1 M urea and the outside 1 M sucrose and 2 M urea. After the system reaches equilibrium, what changes are observed?

How has human activity impacted the evolution of the peppered moth?

Which feature of sugarcanes suggests that they are stems? The presence of scaly leaves and axillary buds A high quantity of sugar The development of adventitious roots

How was the wildlife affected by hurricane sandy in 2012