When sperm cells and egg cells combine we say?

Which of the following best explains why soil conservation is important to human agriculture

Which scenario describes an interaction between two of Earth's spheres?

Russian biologist Konstantin Mereschkowski published a work containing the endosymbiotic theory in the early 20th century.

Why is taking vitamin c ineffective at enhancing iron absorption from standard iron supplements?

A circular structure that is strong and energy efficient is a: A. superdome B. geodesic dome C. metronome D. soccer ball)

Explain three disadvantages to using an electron microscope to view microorganisms.

What are the two strands of dna held together by?

Using context clues, what does predecessors mean as it is used in the first paragraph

Explain how fossil fuels found in the Earth's crust are ultimately the result of biological processes.

the trait for flower color is highly variable among certain species of rose plants leading to the formation of flowers of different colors. how did the flower color variation in rose plants come about