Which is responsible for transporting oxygen-poor blood from the upper part of the body to the right atrium of the heart?

inferior vena cava

superior vena cava

pulmonary veins

pulmonary arteries

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight.which of these is the most likely effect on the ecosystem? a-an increase in biodiversity. b-an increase in immigration to the area. c-a decrease in available water. d-a decrease in plant growth.

What are the most explosive events that occur on the sun? umbras solar flares solar winds prominences

Acertain species of fish can have either long or short fins. the allele for long fins is dominant over the allele for short fins. a heterozygous, long-finned fish is crossed with a homozygous, short-finned fish. of the offspring, will have long fins and be , and will have short fins and be .