kaminipnaidu

Statement 1: If a trait helps an individual survive and reproduce, the genetic variation is passed to the next generation; Statement 2: If there is a mutation in the genetic sequence, it always causes a change in the trait of an organism

Statement 1: The changes in allele frequencies may be random or nonrandom. Statement 2: Natural selection causes nonrandom changes, while genetic drift causes random changes.

What is Energy?

Full Form of IRNSS.

1.Species that are closely related have a high proportion of thenucleotide sequences in their DNA in common.

True of False?

2.Natural populations have the potential to produce moreoffspring than will survive to reproductive age

True or False?

3. Adaptive radiation is usually associated with

a) hybrid sterility

b) a major environmental change

c) heavy predation

d) background extinction

e) allopolyploidy

4.

Mass extinction refers to the continual, low-level loss ofspecies that has occurred due to gradual changes in theenvironment.

Which of the following reservoirs is most important for Nitrogen

HELP ASAP BIO PLEASEE

Nitrogen is an important element in DNA and proteins; however,atmospheric nitrogen is the only source of this

element for life on Earth and it cannot be absorbed byeukaryotes. As a result, nitrogen? fixing bacteria species,

such as Rhizobia, live in a mutualistic relationshipwith plants like legumes. These species of bacteria are

obligate aerobes.

a. Explain what is meant by the term

Nitrogen fixing bacteria live in the roots of some species of plants. The bacteria transform nitrogen into a form readily useable by the plants and receive a stable place to live and food. This is an example of

a.mutualism

b.predation

c.herbivory

d.parasitism

Identify the biotic limiting factor (predation, competition, parasitism, mutualism, commensalism) being described
in the chart below. Please note: each biotic limiting factor may be used more than once. 

Description
a. Burrowing owls nest in abandoned ground squirrel tunnels.
b. Fruit-eating bats feed on figs and spread their seeds.
c. Nitrogen-fixing bacteria live in the roots of certain plants. The plants provide
sugars to the bacteria. The bacteria provide nitrogen to the plant.
d. A plant called spotted knapweed releases chemicals into the soil. The plants
prevent the growth of other plants.
e. Brain worms cause a degenerative condition in moose. Symptoms include
stumbling movements and apparent confusion. The condition often leads to
death.
f. Fatima takes a break from working on her science FSE, runs into a nearby
woodland area screaming BTS lyrics, and hunts down a deer for dinner (ps. the
deer is prepared in a halal manner).

Identify 2 ways that decomposers are involved in the nitrogen cycle?