Answer:
primary succession only occurs on bare rock
Explanation:
Answer:
The color of the birdfeeders
Explanation:
Independent variable is the variable in the experiment that is changed, so the only thing changed in this experiment is the colors of the bird feeders
Answer:
When soil available nitrogen is low, yield and protein content will be low. As nitrogen is applied beyond these levels the wheat plant will no longer use it to
Answer:It is to ensure that a good percentage of offspring survive
Explanation: As with most organisms, there is a good chance that not all offspring will survive, due to factors such as limited resources, predation, etc. Thus certain measures have to be put into place by the parents to ensure a good chance at survival for their offspring. In this case, the eggs that are widely spread out are seen as sacrificial ones, because the parents will not be able to fully care for them and provide resources for them and the ones which were laid in the nest. They will also act as offerings for any predator on thee hunt. All of this will greatly increase the chance of survival for the eggs which were laid in the nest and will receive parental care .
<span>The correct answer is ‘gametes’. Gametes are sex cells: male gametes are sperm cells and female gametes are egg cells. Gametes each contain one set of chromosomes, and when fertilisation occurs, they form a diploid cell.</span>
