Answer:
d. Tetrapods.
Explanation:
The Tetrapods are four limbed animal which contains extincts of mammal, reptile and amphibian. They belong to Phylum chordata. Tetrapods includes land living vertebrates such as frogs, harks, sea lions etc. To be categorized in phylum Chordata the the chordate should possess pharyngeal slits, post tail and dorsal nerve chord.
The possible scenario for singing traits in female birds will be about 26% in Generation 4 species
Explanation:
Singing trait have been common among both male and female birds and it is an ancestral traits. However, singing has been more sex-specific with male birds. Reasons for which birds generally sing are:
- To attract the mates
- While making nests and laying eggs
- For the young birds to recognize their parents
However, various studies prove that the singing trait in female birds is reducing with increase in non-singing female birds over the years due to evolutionary course.
Lana concludes that all of the deer in a forest are members of the same (geosphere / ecosystem / species / hydrosphere) because they look alike and breed with one another. She observes how the deer (population / community / ecosystem / biosphere) interacts with trees, wolves, and other living things of the forest (population / community / species / geosphere).
Answer:
1. Species
2. population
3. community
Explanation:
Given the available options. Here is the correct or full text that matches with the correct meanings.
Lana is studying the deer that lives in a forest. She concludes that all of the deer are members of the same SPECIES because they look alike and breed with one another. Next, she observes how the deer POPULATION interacts with trees, wolves, and other living things of the forest COMMUNITY
Answer:
B. similar to the cells just treated with the dye - 0% dead
Explanation:
According to this question, an experiment was set up in which kidney cells were treated with a chemical for different amounts of time. Hence, the independent/manipulable variable is the CHEMICAL.
Based on the observation of the group of cells, a cell that has been damaged by the chemical will appear pink when treated with dye while a cell treated with only due but no chemical will not appear pink.
A NEGATIVE CONTROL is the group in an experiment that is not treated with the independent variable i.e. doesn't receive experimental treatment. Since the independent variable in this experiment is the CHEMICAL, the negative control will be the group that doesn't receive the chemical treatment. Hence, the negative control is similar to the cells just treated with the dye - 0% dead
