Natural Selection and Rough-Skinned Newts

Miss Lasky, an eighth-grade science teacher, introduces a lesson on natural selection, focusing on populations and their changes over time. The lesson includes a warm-up activity with frogs and a video about rough-skinned newts, which have become more poisonous over time. Students are encouraged to think about what caused this change, with two main claims presented: newts became poisonous by choice or due to environmental factors.

What is the main focus of the natural selection unit introduced by Miss Lasky?

• The impact of climate change on ecosystems

• The behavior of animals in captivity

• The change in populations over time

• The study of individual organisms

What materials are suggested for the lesson on natural selection?

• A computer and a smartphone

• A calculator and a textbook

• Something to write with and on

• A camera and a notebook

In the warm-up activity, what are students asked to observe about the frogs?

• Their size and weight

• Their jumping abilities

• Their diet and feeding habits

• The colors and patterns on their bodies

What does the term 'population' refer to in the context of this lesson?

• The total number of organisms on Earth

• A group of the same type of organism in an area

• The number of organisms in a zoo

• A group of different species living together

What is the role of a biologist as mentioned in the lesson?

• To train animals for entertainment

• To plant trees in deforested areas

• To study the interactions of organisms with each other and their environment

• To manage wildlife reserves

What is the main concern about rough-skinned newts discussed in the video?

• Their declining population

• Their diet and feeding habits

• Their increasing levels of poison

• Their migration patterns

What is a common misconception about rough-skinned newts?

• They are harmless to humans

• They are only poisonous to bugs

• They are only dangerous to large animals

• They are not poisonous at all

What question does Dr. Alex Young seek to answer about the newts?

• Why are newts migrating to new areas?

• How do newts communicate with each other?

• How did newts become more poisonous over time?

• What do newts eat in the wild?

Which claim suggests that newts became more poisonous due to environmental factors?

• Claim 1: Newts became poisonous because they wanted to

• Claim 2: Environmental changes caused increased poison levels

• Claim 3: Newts evolved to be less visible

• Claim 4: Newts developed poison to attract mates

What is the purpose of gathering evidence in this unit?

• To find new habitats for newts

• To study the diet of newts

• To understand how newts became more poisonous

• To prove that newts are not poisonous