What two structure are "fertilized" during double fertilization

Describe how an increase in the carbon dioxide concentration can lead to global warming

If steel is more dense than lake water, why can a boat float?

What is the role of reproduction, growth, development?

Random orientation of chromosomes during meiosis increases the amount of variation in the next generation. what other process during meiosis leads to an increase in variation in the next generation?

What cellular processes are "hijacked" by viruses?

How many protons and neutrons does sulfur-35 have?

What is the smallest, most basic unit of life?

if a strong odour smell continuously for sometime, the sensation of smell of that substance weaken ... why?

Which body systems regulate blood sugar level to maintain homeostatis

Two Differences between plant cells and animal cells