It would be great if you would help me out. I need it as soon as possible.

In January the earth is tilted towards the sun yet the northern hemisphere is in winter explain why

vagabundo [1.1K]

The gravitational pull stays the same throughout, but the world itself dosent rotate vertically

5 0

3 years ago

describe the relationships between living organisms such as mutualism, predation, parasitism, competition, commensalism brainly

Anni [7]

In a mutualistic relationship, both species benefit.

Predation is when a predator eats another organism, in which the predator benefits and the other organism dies.

In parasitism the parasite benefits while the host is harmed.

In competition, neither species benefits because they're too busy fighting over resources.

Commensalism is when only one of the two species benefits but the other is not harmed.

3 0

3 years ago

Why most ecologists do not study the biosphere level of organization.

pshichka [43]

Answer: Most ecologists do not study the biosphere level of organization because it is difficult to study all of life on earth as a whole. It is more effective to study it broken down into parts.

Explanation:

7 0

4 years ago

In the diagram below you can see structures that work together to allow flowering plants to reproduce.

mart [117]

Complete question:

Several structures work together to allow flowering plants to reproduce. The diagram shows a typical flower.

Which answer correctly identifies the function of each structure or group of structures in the reproduction of the plant?

X- pollen production

Y- pollen transfer

Z- production of eggs

X- attraction of pollinators

Y- production of male sex cells

Z- egg production

X- production of eggs

Y- pollen transfer

Z- pollen production

X- production of eggs

Y- pollen production

Z- pollen transfer

Answer:

X- attraction of pollinators

Y- production of male sex cells

Z- egg production

Explanation:

Flowers are reproductive structures in charge of sexual reproduction through the production of seeds.

Z, Feminine reproductive structures:

The central structure is known as a carpel, also recognized as the pistil.
The base of the carpel forms the ovary, in which the eggs are produced and where the zygote develops.
The opposite extreme of the carpel is the stigma, in the superior part. The stigma is a sticky surface where the pollen grains get attached.
The ovary and the stigma are connected by a filament named style.

Y, Masculine reproductive structures:

The pollen grains, or male sex cells, are produced in the stamens.
The stamen has an anther where the pollen is produced, and a filament that provides support.

When mature, pollen grains are driven to the stigma of the same flower or other flowers of the species, where they stick. Once in the stigma, the pollen grains move to the ovary, where they meet the egg and fertilize. The zygote develops in the ovary.

X, External non-reproductive structures:

Flowers also have external structures known as petals and sepals. These structures are modified leaves whose principal function is to protect the flower´s fertile parts and attract pollinators. Petals characterize as having many different colors that make the flower more attractive to insects and some animals. When they visit a flower searching for their recompense, the flower´s pollen grains transfer to the insect´s body. The insect transports the pollen to the next visited flower, leaving it in the stigma of the second flower.

3 0

3 years ago

Examine the illustration of the HIV virus. What part of the HIV virus serves to protect the nucleic acid core?

Fed [463]

The correct answer is A: Capsid.

5 0

3 years ago

Read 2 more answers