Who proved that cells come from pre existing cells

life would not be possible on earth without the water that covers much of its surface and the air that surrounds it, earth water and air affects each other in many ways which of the following situations represent an interaction between the

You are observing two juvenile chimpanzees. When they first meet, they embrace. They then begin tickling each other and wrestling mildly. Would you characterize this behavior as affiliative or aggressive?

Giraffes have long necks that allow them to reach more food sources in their habitat. The long neck trait is an example of selection. adaptation. radiation. homology.

Why is the population growth of the human species different from that of all other organisms?

Cells grow in order for to grow and represents

What is the dependent variable? Also what is the Testing Variable.

Statistics about the climate in a tundra ecosystem were collected for 30 years. which hypothesis about a population of caribou could be made based on the climate data collected? a. caribou calf survival is directly related to annual rainfall amounts.

Since plant cells do not have centrioles, how do they make spindle fibers during mitosis?

Plants use sunlight to produce some ATP during photosynthesis. How do plants produce ATP when the Sun is not out? a. Plants are secondary consumers. b. Plants also use cellular respiration. c. Plants extract ATP from the stars. d.

Describe 4 ways that we know the global climate is changing