Which organism in a ecosystem is likely to be found at the top of an energy pyramid

grass

insect

frog

hawk

According to the fossil record, which statement is accurate? (1) Most of the species that have lived on Earth no longer exist. (2) Most of the species that have lived on Earth still exist today. (3) Fossils of species that never existed can be found.

How is a single cell similar to an elephant

As a tree goes into dormancy, its leaves change color. What causes this change in color? The tree makes extra chlorophyll. The tree stops making chlorophyll. The tree produces extra hormones. The tree stops producing hormones.

Which condition can result from a diet high in calories, fat, and low in fiber?

What is the source of the sugar metabolized by the seed?

What is tolerance (explanation)

Which actions should a nurse take while caring for a preschooler whose blood lead level is found to be 25 mcg/dl? select all that apply?

Sodium benzoate is a bitter chemical often used in tiny amounts as a food preservative. The ability of humans to taste sodium benzoate is caused by a dominant allele, t. The recessive allele ("non-taster") is n.

Which of the following correctly displays the sequence of developmental milestones? A) blastula → gastrula → cleavageB) cleavage → gastrula → blastulaC) cleavage → blastula → gastrulaD) gastrula → blastula → cleavage

What is true about DNA