Ecosystems
A pack of hyenas in the African savanna is an example of what
population
What are the reactants of photosynthesis (3)
Carbon dioxide, water, and sunlight
In a punnett square, what does AA mean? (two words)
homozygous dominant
The fact that organisms with the best traits are more likely to live longer and pass on their traits to offspring. Another term for natural selection
survival of the fittest
_______ change the atmosphere by removing CO2 and releasing O2.
plants/producers
organism
What are the products of photosynthesis? (2)
oxygen and glucose
Where in a cell can you find the instructions or code needed for traits of an organism?
In its DNA
The scientist known as the father of natural selection, studied finches and saw their different beak shapes and sizes
Darwin
Squirrels live in a forest ecosystem with chipmunks, insects, birds, and opossums. The soil is rocky but the variety of plants can grow. What is an example of an abiotic factor in this example?
rocky soil
What is the primary source of energy for a forest ecosystem
the sun
What organisms go through photosynthesis and what go through CR?
P = producers (plants); CR = all living things
How many chromosomes does a human have?
A female dog has a litter of 5 puppies, each looks different than its sibling, including size and color. This is an example of....
variation
The relationship between a bird who builds a nest in a tree and the tree being unaffected
commensalism
Rabbits and sheep both graze on shrubs, grasses, and other plants. What type of relationship do they have?
interspecific competition
Where do photosynthesis and cellular respiration take place?
In a punett square, if both parents are Aa, what is the percent chance of their offpspring being each of the following genotypes: AA, Aa, and aa
AA = 25%
Aa = 50%
aa = 25%
A physical structure or behavior that helps an organism survive
an adaptation
What is a main reason that invasive species thrive in their new ecosystem?
They have no natural predators
The natural flow of ENERGY in an ecosystem starts with the ________, then goes to ____________ through photosynthesis, which is then eaten by ______________, which is then broken down by ______________
sun, producers, consumers, decomposers
what is the equation for cellular respiration
oxygen + glucose ----> water + carbon dioxide + ATP
A basic unit of hereditary information, that influences a particular trait
gene
As organisms adapt and change, or long periods of time, those organisms can become so different that they are now entirely different __________
species
Animals doing a mating dance to attract is an example of a (2 words)
behavioral adaptation