Why dont some rivers no longer reach the ocean?

Describe the activity of chromosomes in each stage of meiosis 1 and meiosis 2

During which process is oxygen used by green plants? A) photosynthesis B) hydrolysis C) respiration

on a floor there are several 1-4 mm elongated drops leading away from a body lying in a pool of blood. the the forward wall there is a sigzag pattern and on the walls to the right side there is a linear patter

The process of circulation serves to A. Break down gases absorbed in the lungs B. Move air into and out of the body C. Transport absorbed materials throughout the body D. Absorb gases inhaled through the mouth or nose

What does it mean for a molecule to be organic?

What are organisms that have been genetically engineered A. genetic adapted organisms B. genetic modified organisms C. genetic customized organism D. genetic tailored organisms

Why is there no single scientific method

Discuss whether or not the steps of the scientific method must be carried out in a specific order and whether or not every scientific endeavor must include all seven steps

Do species prefer to compete?

To determine how a flowering plant is pollinated, which structure or feature would be most important to examine?