name date period diversity of life unit test review if an environment changes and the adaptations of a species dont help it survive, it may become. charles darwin helped explain how change over. what kingdom is an oak tree a member of? . help species survive in its environment. populations slowly change over time in a process called. the scientific name for the a wolf is canis lupus what is its genus? . what is its species? a branching diagram shows when an organism and the relationship between. a spider may produce hundreds of eggs, only a few of which may survive. this is an example of. are traces or remains of organisms that lived long ago. what does comparing the structures and dna of two species sometimes show? . parents pass to their offspring through genes. scientists believe that whales have an ancient ancestor that was a mammal and lived on land is based on what evidence? scientists compare organisms anatomy and dna to support the theory that species share common. populations that have genetic may have trouble becoming adapte their environment. scientists use to refer to organism because common names can create confusion. speciation creates a. a timeline of life indicated by traces or remains of organisms found in earth’s crust is called the. darwin did not understand the role of in the process of evolution.

Question

Accepted Answer

### Question 1: If an environment changes and the adaptations of a species don’t help it survive, it may become ______.
# Brief Explanations:
In the context of evolution and species survival, when a species' adaptations are not sufficient for survival in a changed environment, the species is at risk of extinction. Extinction means the species no longer exists.
# Answer:
extinct

### Question 2: Charles Darwin helped explain how ______ change over ______.
# Brief Explanations:
Darwin's theory of evolution by natural selection focuses on how species (groups of organisms) change over time (generations or long periods) as they adapt to their environments.
# Answer:
species; time

### Question 3: What kingdom is an oak tree a member of? ______.
# Brief Explanations:
Oak trees are plants, and the kingdom for plants is Plantae. Organisms in the Plantae kingdom are multicellular, photosynthetic, and have cell walls.
# Answer:
Plantae

### Question 4: ______ help species survive in its environment.
# Brief Explanations:
Adaptations are traits (structural, behavioral, or physiological) that help organisms survive and reproduce in their environment. They are the result of natural selection.
# Answer:
Adaptations

### Question 5: Populations slowly change over time in a process called ______.
# Brief Explanations:
Evolution is the process by which populations of organisms change over successive generations. This change is driven by mechanisms like natural selection, genetic drift, etc.
# Answer:
evolution

### Question 6: The scientific name for the a wolf is Canis lupus What is its genus? ______. What is its species? ______
# Brief Explanations:
In binomial nomenclature, the scientific name is composed of the genus (first part, capitalized) and species (second part, lowercase). For *Canis lupus*, "Canis" is the genus and "lupus" is the species.
# Answer:
Canis; lupus

### Question 7: A branching diagram shows when an organism ______ and the relationship between ______.
# Brief Explanations:
Branching diagrams (like phylogenetic trees) show when an organism evolved (diverged from a common ancestor) and the relationships between different species (or groups of organisms) based on evolutionary history.
# Answer:
evolved; species (or organisms)

### Question 8: A spider may produce hundreds of eggs, only a few of which may survive. This is an example of ______.
# Brief Explanations:
Overproduction is a concept in natural selection where organisms produce more offspring than can survive. This leads to competition for resources, and only the fittest (best adapted) offspring survive.
# Answer:
overproduction (or natural selection - as overproduction leads to selection)

### Question 9: ______ are traces or remains of organisms that lived long ago.
# Brief Explanations:
Fossils are the preserved remains, impressions, or traces of ancient organisms. They provide evidence of past life and evolution.
# Answer:
Fossils

### Question 10: What does comparing the structures and DNA of two species sometimes show? ______
# Brief Explanations:
Comparing anatomical structures (homologous, analogous) and DNA sequences can show how closely related two species are (their evolutionary relationship). Similar structures or DNA sequences suggest a common ancestor.
# Answer:
their evolutionary relationship (or how closely related they are)

### Question 11: Parents pass ______ to their offspring through genes.
# Brief Explanations:
Genes carry hereditary information (traits) from parents to offspring. These traits can be physical, behavioral, etc., and are encoded in DNA.
# Answer:
traits (or genetic information)

### Question 12: Scientists believe that whales have an ancient ancestor that was a mammal and lived on land is based on what evidence?
# Brief Explanations:
Evidence for whale evolution from land - dwelling mammals includes fossil evidence (transitional fossils like *Ambulocetus*), anatomical evidence (homologous structures like pelvic bones), and molecular evidence (DNA similarities to other mammals).
# Answer:
Fossil evidence (transitional fossils), anatomical evidence (e.g., pelvic bones), and molecular (DNA) evidence.

### Question 13: Scientists compare organisms anatomy and DNA to support the theory that species share common ______.
# Brief Explanations:
Comparing anatomy (homologous structures) and DNA helps support the theory of evolution, which states that species share a common ancestor (they evolved from a common ancestral species).
# Answer:
ancestor

### Question 14: Populations that have ______ genetic ______ may have trouble becoming adapted to their environment.
# Brief Explanations:
Populations with low genetic diversity (few different alleles/genes) have less variation. This makes it harder for them to adapt to environmental changes because there are fewer traits available for natural selection to act on.
# Answer:
low; diversity

### Question 15: Scientists use ______ ______ to refer to organisms because common names can create confusion.
# Brief Explanations:
Scientists use scientific names (binomial nomenclature) to refer to organisms. Each organism has a unique scientific name (genus + species) to avoid confusion from common names (which can vary by region/language).
# Answer:
scientific names

### Question 16: Speciation creates a ______ ______.
# Brief Explanations:
Speciation is the process by which new species are formed. So it creates a new species.
# Answer:
new species

### Question 17: A timeline of life indicated by traces or remains of organisms found in Earth’s crust is called the ______ ______.
# Brief Explanations:
The fossil record is the collection of all fossils (traces/remains of ancient organisms) found in Earth's crust, which provides a timeline of the history of life on Earth.
# Answer:
fossil record

### Question 18: Darwin did NOT understand the role of ______ in the process of evolution.
# Brief Explanations:
Darwin's time lacked knowledge of genetics (DNA, genes, inheritance mechanisms like Mendelian genetics). He knew about variation but not how traits were inherited at the molecular level.
# Answer:
genes (or genetics)

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Explanation:

Question 1: If an environment changes and the adaptations of a species don’t help it survive, it may become ______.

Answer:

Question 2: Charles Darwin helped explain how change over .