Which of the following statements is true? The earth's core is made of liquid metal. Convection currents in the mantle cause the movement of crustal plates. The earth's crust is very hard and strong. It is difficult for magma to break through. The presence of sedimentary rocks means the area was once near an active volcano.

The general principles of Hox gene function and logic elucidated in flies will apply to all bilaterian organisms, including humans. Drosophila, like all insects, has eight Hox genes. These are clustered into two complexes, both of which are located on chromosome

the answer you are looking for is option d

Answer: Observe for changes

Explanation:

There are two different types of variable in an experiment. One is dependent variable and the other one is independent variable.

The independent variable are the factors which are changed in the experiment in order to observe the change and get the result of the experiment.

The changes in the independent variable changes the dependent variable and then observed change is the result.

So, the dependent variable that observes for the changes.

The dependent variable in an experiment will be the one that you _____;

D. Observe for changes

Anexperiment has three kinds of variables;

Independent

Dependent

Controlled

The independent variable is the one that the scientist changes so A is not an option.

The experimenter is to change the independent variable, thus, the change in the dependent variable is observed and recorded

Using the rock cycle, it shows that with heat and pressure, an igneous rock can turn into a metamorphic rock.

Explanation:

This is incorrect because it can also convert to sediments by weathering, erosion, and deposition. The Rock Cycle is a group of transformations. Igneous rock can transform into sedimentary rock or into metamorphic rock. Sedimentary rock can transform into metamorphic rock or into igneous rock. Metamorphic rock can convert into an igneous or sedimentary rock.