single letter answers
In a group of antelopes, some antelopes can run 60 mph and some can only run 30 mph
B.the fast antelopes outrun predators and survive to reproduce
Which of these describes a behavioral adaptation that will increase the probability that a species will survive?
D. A mother stays with her cubs for a year and a half until they learn skills to live on their own.
An environmental change occurs, causing a change in the color of snails present in an ecosystem. The graph shows the color distribution in a snail population of two different times
C. Predators could more easily catch lighter-colored snails
D. The lighter-colored snails had few offspring to pass the trait along.
Scientist observed a species of a bird and the environment in which it lives. Many years later, the mscientistreturned to make a second observation of the species of a bird and the environment in which it lives. The scientist discovered a change in the distribution of feather colors within the bird species between the first and second observations, as shown in the graph.
a. A new predator was introduced to the environment
b. The competition for space/nesting areas increased
c. Females selected males with certain traits more often
d. A new food supply was introduced to the environment
e.The bird population increased
a. Probable Cause
b. Unlikely Cause
c. Probable Cause
d. Unlikely Cause
e. Unlikely Cause
Fireflies are insects with a glowing light inside bodies. A chemical reaction produces this light. The light helps fireflies in several ways.
__________________________________________
Ways Fireflies Use Light
*Males flash lights in patterns to attract females.
*Light warns predators to stay away because the insects contain a chemical that taste bad.
A. The population would decrease, because the mal fireflies could not attract mates without their lights.
a farmer tested the effect of fertilizer on the growth of 1000 pea plants the farmer recorded the following observations based on the observations identify one characteristic of the pea plant that was mainly influenced by genetics
b. flower color because there was not a difference in flower color based on the use of fertilizer
After researching oriole characteristics, the students claimed that specific Baltimore oriole behaviors increase the likelihood of successfully reproducing during a breeding season.
B. Female orioles lay 3-7 eggs after mating
C. Male orioles defend territory around the nest
E. Females orioles fan their tail feathers and lower their wings when responding to a mate
A. Pond X is three times the size of Pond y
B. The trout in pond X have different genes than the trout in pond y
C. There is more food available for trout in pond X than in pond Y
D. Pond X has a different species of predator that preys on trout than pond Y
A. environmental
B. Hereditary
C. Environmental
D. Environmental
Some birds will eat corn seeds and teosinte seeds. The chart shows characteristics of these two types of seeds.
Corn and teosinte plants are grown in the same area. Which type of plant would likely be more successful at producing offspring that would develop into new plant?
b. teosinte
In science class students plant a corn seed in two separate containers. They label the containers as container A and Container B and give the seeds the same amount of resources. Throughout the activity, they see that the corn in Container B grows faster than the other corn plant. Which conclusion best supports the students' observation
C. Seeds must have received different genes from their parent plants.
Which of the following evidence that could be used to support the argument that specialized plant structures affect the probability that a plant's seed will be spread away from the parent plant?
A. Willow trees have seeds that are light and float on water
B. Sand burrs have barbed seeds that attach to passing animals
C. Dandelion seeds have added parts that allow them to travel easily on a breeze
2. More brown beetles reproduce
3. Brown color improved survival
4.The environment changes
3. Brown color improves survival
2. More brown beetles reproduce
1. Brown beetle population increases
Select 2 reasons to support your answer in Part A
B. The seeds have a protective structure
C.The seeds that fall to the ground are difficult for birds to see
Which of the following best explains why the tortoises have different neck lengths.
B. Each of the tortoises is adapted to the environment of their different islands. Selection for neck lengths has occurred over many generations.
Which demonstrates how genetic variation may result from a change in the environment were an animal lives.
C. Artic foxes change their color over time because they migrate to areas with a different climate.
witch evidence could be used to challenge the biologist claim that purple flowers in population of plants attract pollinators that other flowers do?
A. The purple flowers did not have any butterfly or beetle pollinators
Five hundred flies of one species were sprayed with a insecticide. Twenty-four hours later, nearly all of the flies were dead. However, a few survived. Which best explains why the flies survived.
D. There is a variation among individuals within a species
The spines of a cactus once were leaves. The stem of the cactus is thick, fleshy, and covered with a waxy material. The roots of a cactus are shallow and spread over a large area. The cactus plant's adaptions meet what need that its environment does not provide?
B. enough water because of many hot, dry, sunny days