Guinea pigs have a gene that codes for black or brown fur. The allele for black fur (B) is dominant over the allele for brown fur (b). Which combination of parental genotypes could produce offspring with black fur as well as offspring with brown fur?

How are tsunamis, earthquakes, and tectonic plate movement all related?

The diagram shows island formation at a hot spot in Earth's mantle. Islands W, X, Y, and Z were all formed by the hot spot's volcanic activity. Which island is the oldest?

Select THREE situations in which unbalanced forces are acting on the objects.

Geothermal energy sources that can produce steam are located where bodies of magma are relatively close to Eath's surface. In which regions would these steam-producing energy sources occur?

A jackrabbit is a hare, an animal similar to a rabbit but not a rabbit species. Jackrabbits live in deserts and the central and western plains.

Jackrabbits have very large ears, which help them to stay cool, and strong hind legs that help them escape predators. Rabbit species typically have shorter ears and legs than jackrabbits.

Based on this information, what is a valid conclusion about jackrabbit characteristics?

What characteristic could provide a species with a better chance to survive a drastic environmental change?

The jellyfish life cycle has several stages. During one of these stages, jellyfish reproduce asexually. Which statement describes an advantage of asexual reproduction?

Which statement describes the weight of a horse?

Which statement describes how rock characteristics affect rates of weathering?

Mesosaurus is a reptile that has been extinct for nearly 300 million years. Fossil remains of this animal have been found in South America and Africa. Which statement explains the location of these fossils on opposite sides of the Atlantic Ocean?

Based on the pictures, which reason would most likely be responsible for the changes?

Which process results in the formation of deep ocean trenches?

A river has cut a channel deep into the earth and exposed several layers of undisturbed sedimentary rock as shown in the cross section.

Which layers it the oldest?

In 1968, the Deep Sea Drilling Project began extracting sediment cores from the ocean floor. Analysis of these cores has since shown that the ocean basins are very young compared to the accepted age of the Earth. No rocks older than 180 million years have been found. The cores further indicate that ocean sediments are absent at the mid-ocean ridge and get thicker moving away from the ridge.

This evidence helped to confirm what aspect of plate tectonic theory?

Spider plants can reproduce by spawning plantlets on long, thin stems. The plantlets can be removed from the parent plant and placed in soil. When planted like this, the plantlet becomes a new spider plant.

Complete the sentence that describes the inherited traits of the new plant grown from plantlets.

__________ of inherited traits come from the parent plant.

The diagram shows a river that is carrying sediment into an ocean.

What will happen to most of the sediment being transported by the river water when it first enters the ocean at Location T in the diagram?

Identify what goes in spot 1 and spot 2.

Which conclusion about the resulting changes to Earth's surface is supported by evidence from the maps?

The map shows four cities and tectonic plate boundaries found in different parts of the world.

Which city is the most likely to be near a volcano?

A farmer grows peaches and nectarines, which are two varieties of the same tree species.

One difference between the two fruits is that peaches have fuzzy skin, while nectarines have smooth skin. The allele for skin fuzz is F, is dominant over the allele for smooth skin, f. The farmer performs several crosses using peaches and nectarines.

Which cross shows the parent generation that will most likely result in the highest percentage of nectarine offspring?

Scientists record the types of fossils found in different layers of sedimentary rock in one location. They observe that lower layers have more species than upper layers.

Which piece of evidence would help scientists understand the change in species number?

Coal is made from decomposed land plants. Coal has been found in the Arctic. The coal came from forests that grew in the Arctic in the distant past. Today, the Arctic is too cold to support tree life.

What does the existence of arctic coal tell scientists?

Which statement could explain the trend in the graph?

Select the TWO main geological processes that create the hoodoos.

A cell from the skin of an onion contains 16 chromosomes.

How many chromosomes are present in the sex cell of an onion?

In fruit flies, the coloration of tan with black stripes (B) is dominant to a solid black body color (b). A biologist crosses a tan male with black stripes and a female with a solid black body color.

Which stated observation can lead the biologist to the stated conclusion about the genotype of the male fruit fly in this cross?

From the fossil evidence, what conclusion can be made about the history of the environment that is now desert?

In which direction will the box move?

During the 1800s, most peppered moths in England were light-colored. During the 1800s, many factories were built. Their pollution darkened the light colored tree trunks where the moths rested. Eventually, more moths were dark colored and only a few were light colored.

Which statement explains why the number is dark colored moths in the population increased?

Use the image to answer the question about rock faults.

The hydra reproduces asexually by the process of budding, as shown.

Why are the offspring of this hydra identical to one another?

Two cars, X and Y, are traveling on a straight road. Passengers in Car X observe that Car Y appears to remain still.

What is the relative movement of the two cars?

What process forms mid-ocean ridges?

What behavior of S-waves is useful to scientists studying Earth based on the P-wave behavior and S-wave behavior diagrams?

The Hawaiian Islands are volcanic islands located near the center of a large tectonic plate called the Pacific plate.

Which geological feature is responsible for forming the Hawaiian Islands?

According to this information, which diagram matches the order in which the layers were deposited?

Which claim is supported by the presence of a fern fossil in the rock layers in Antarctica?

The movement shown in the map indicates that Africa's continental crust is splitting apart in the East African Rift.

As a result of this divergence, what can you predict will happen in the East African Rift region in about five million years?

Which fossil would be most useful in determining the relative age for the rocks in these geologic columns?

What effect does friction have on a moving object?

Deep within Earth's mantle, some materials sink toward the planet's center while others rise toward the surface.

Which property of a material is directly related to whether it will rise or sink?

Which condition allows for a population of genetically identical organisms to be successful?

What landform is formed along this boundary?

Which processes likely occur at Points A and B?