D. 1,200
This is because if it takes 1 and a half hours **1.5** to travel through city a and city b , and the plane goes 800km per hour and 400km is half of that it then the answer has to be d.
Prokaryotic: before nucleus, no membrane bound organelles, and single celled microscopic organisms
eukaryotic: true nucleus, has membrane bound organelles, and multi cellular or unicellular organisms
therefore it would be letter <span>B. cell membrane and cytoplasm</span>
Answer:
D. the nucleus contains the protons and neutrons which takes up most of the mass of the atom
Explanation:
Microorganisms that are capable of causing disease are called pathogens. Although microorganisms that cause disease often receive the most attention, it is important to note that most microorganisms do not cause disease. In fact, many probably provide some protection against harmful microorganisms because they effectively compete with the harmful organisms for resources, preventing them from growing.
