How are the respiratory and circulatory systems connected?

A. They communicate using neuroendocrine cells

B. They connect across synapses

C. They trade oxygen and carbon dioxide

D. They send hormones to each other

Which statements accurately describe the aspects of plate tectonics that involve subduction and seafloor spreading? Check all that apply. Older crust is melted at subduction zones. Oceanic crust is created at mid-ocean ridges.

List the organization of living things from the most inclusive to the least inclusive.

If you take a bite of a plant why does it not taste sweet all the time with sugar made?

1. Each pea-plant gamete has how many alleles for the height gene?

In eukaryotic cells, proteins are made at the ribosomes. What other organelles are involved in this process?

How does a mutation in dna cause a disease that affects multiple organs?

Dylan is on a strict vegan diet. He doesn't consume meat, fish, eggs, or dairy products. Which nutrient is difficult to obtain naturally from a vegan diet

Determine what each letter represents in the Punnett square. Letters A and B represent the genotypes of the

What vessel returns filtered blood to the inferior vena cava

Which of these is true for bacteria because they are prokaryotic cells a - they can destroy neutrophils b - they are much smaller than lymphocytes c - they can invade macrophages d - they are much larger than killer T cells