2. A scientist is studying a substance that is cycled through ecosystems. Which of the following substances might the scientist be studying? soil copper glucose nitrogen 3. What is energy? the ability to do work anything that has mass anything that takes up space the ability to conduct current
4. Which phrase best describes a consumer in a food web? an organism that forms the base of the food chain an organism that breaks down dead plants and animals an organism that gets its energy by eating plants or animals an organism that converts light energy into chemical energy

5. Carbon exists in many forms on Earth. The diagram below shows part of the carbon cycle. Ask your teacher to describe the diagram to you. What is happening in Step 1? Animals are decomposing and releasing carbon into the soil Animals are releasing energy into the environment and storing carbon Animals are converting carbon dioxide from the atmosphere to oxygen Animals are breaking down organic molecules and releasing carbon dioxide into the atmosphere

6. How are tropical plants such as bromeliads adapted to the biome in which they live? They grow from tree branches rather than the forest floor, which helps them to absorb more sunlight They have long, thick roots, which helps them to gather the nutrients that are found deep within the soil They have hollow leaves and stems for storing water, which helps them to survive long periods with little rainfall They lose their leaves during the winter, which helps them to save energy when the temperature falls and prevents the buildup of snow
7. A researcher is investigating the plants shown below. Two cactus. Which biome is the researcher most likely studying? taiga desert tropical rain forest grassland
8. What important role does fire play in a grassland biome? It helps seeds germinate It spreads seeds to distant location

ANSWER QUICK AND CORRECT ITS FROM ODDESEYWARE I WILL GIVE BRAINLEST

if im not mistaken its a. collective emotional arousal

answer; negative punishment;

clearcutting reproduces a new even-aged stand by completely removing the mature stand.

clearcutting as a silvicultural treatment has several characteristics:

it causes a sudden environmental change

it removes the seed source from the regeneration area

the configuration of the clearcut may affect seed dispersal

it begins a new rotation

it will eliminate some pests that require forest cover

overall, it temporarily removes the forest cover, transforming the forest community and environment.

clearcutting followed by artificial (seeded or planted) regeneration has several advantages:

we can avoid delay in restocking the site

we can introduce a selected species, seed source, and genotype

we can control arrangement and spacing

we can achieve uniformity in the new stand

we can overcome the problems associated with securing sufficient natural regeneration.

the shelterwood method involves the removal of most of the mature stand at the end of the rotation, but a portion of the mature stand is left standing.   the shelterwood method serves three basic purposes:

to prepare the stand for production of abundant seed

to modify the environment in a way that promotes germination and survival of the selected species

to build up the amount and size of advance regeneration to ensure the prompt restocking of the new stand following overstory removal.

the shelterwood method involves a sequence of 3 cuttings:

preparatory cuttings: make the seed trees more vigorous and set the stage for regeneration. see our thinning page for more information.

establishment/seed cuttings: open up enough vacant growing space to allow establishment of the new regeneration.

removal cuttings: uncover the new crop to allow it to fill the growing space.

the residual trees in the shelterwood must:

be sturdy and windfirm

be able to survive exposure

flower and reproduce seed

be the best trees of the mature stand

keep in mind that the shelter trees must not occupy the entire site.   a void must be created in order to make room for the new regeneration. the amount of shelter to leave will depend on the following factors:

species characteristics (seeding and shelter requirements)

the number of cuttings in the cutting sequence (1, 2, or 3)

landowner objectives

the size of the area to be regenerated

the final removal harvest level required to be profitable

the shelter must be removed before it impedes the growth of the new stand or threatens its survival.

answer; approx,300,000 ;